diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
index 18e01859b..d1caefc52 100644
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@@ -19,6 +19,7 @@
       <option name="WRAP_ON_TYPING" value="0" />
       <indentOptions>
         <option name="INDENT_SIZE" value="2" />
+        <option name="CONTINUATION_INDENT_SIZE" value="4" />
         <option name="TAB_SIZE" value="2" />
       </indentOptions>
     </codeStyleSettings>
@@ -43,4 +44,4 @@
       </indentOptions>
     </codeStyleSettings>
   </code_scheme>
-</component>
\ No newline at end of file
+</component>
diff --git a/code_samples/comparing_string_references_inspection/src/main/java/org/intellij/sdk/codeInspection/ComparingStringReferencesInspection.java b/code_samples/comparing_string_references_inspection/src/main/java/org/intellij/sdk/codeInspection/ComparingStringReferencesInspection.java
index ca6b88439..045e928b4 100644
--- a/code_samples/comparing_string_references_inspection/src/main/java/org/intellij/sdk/codeInspection/ComparingStringReferencesInspection.java
+++ b/code_samples/comparing_string_references_inspection/src/main/java/org/intellij/sdk/codeInspection/ComparingStringReferencesInspection.java
@@ -58,8 +58,8 @@ public class ComparingStringReferencesInspection extends AbstractBaseJavaLocalIn
           if (isStringType(lOperand) || isStringType(rOperand)) {
             // Identified an expression with potential problems, register problem with the quick fix object
             holder.registerProblem(expression,
-                    InspectionBundle.message("inspection.comparing.string.references.problem.descriptor"),
-                    myQuickFix);
+                InspectionBundle.message("inspection.comparing.string.references.problem.descriptor"),
+                myQuickFix);
           }
         }
       }
@@ -75,7 +75,7 @@ public class ComparingStringReferencesInspection extends AbstractBaseJavaLocalIn
 
       private static boolean isNullLiteral(PsiExpression expression) {
         return expression instanceof PsiLiteralExpression &&
-                ((PsiLiteralExpression) expression).getValue() == null;
+            ((PsiLiteralExpression) expression).getValue() == null;
       }
     };
   }
@@ -115,7 +115,7 @@ public class ComparingStringReferencesInspection extends AbstractBaseJavaLocalIn
 
       PsiElementFactory factory = JavaPsiFacade.getInstance(project).getElementFactory();
       PsiMethodCallExpression equalsCall =
-              (PsiMethodCallExpression) factory.createExpressionFromText("a.equals(b)", null);
+          (PsiMethodCallExpression) factory.createExpressionFromText("a.equals(b)", null);
 
       PsiExpression qualifierExpression = equalsCall.getMethodExpression().getQualifierExpression();
       assert qualifierExpression != null;
diff --git a/code_samples/comparing_string_references_inspection/src/test/java/org/intellij/sdk/codeInspection/ComparingStringReferencesInspectionTest.java b/code_samples/comparing_string_references_inspection/src/test/java/org/intellij/sdk/codeInspection/ComparingStringReferencesInspectionTest.java
index d77cd8a9d..c2c4b45a2 100644
--- a/code_samples/comparing_string_references_inspection/src/test/java/org/intellij/sdk/codeInspection/ComparingStringReferencesInspectionTest.java
+++ b/code_samples/comparing_string_references_inspection/src/test/java/org/intellij/sdk/codeInspection/ComparingStringReferencesInspectionTest.java
@@ -14,7 +14,7 @@ import java.util.List;
 public class ComparingStringReferencesInspectionTest extends LightJavaCodeInsightFixtureTestCase {
 
   private static final String QUICK_FIX_NAME =
-          InspectionBundle.message("inspection.comparing.string.references.use.quickfix");
+      InspectionBundle.message("inspection.comparing.string.references.use.quickfix");
 
   @Override
   protected void setUp() throws Exception {
diff --git a/code_samples/editor_basics/src/main/java/org/intellij/sdk/editor/EditorAreaIllustration.java b/code_samples/editor_basics/src/main/java/org/intellij/sdk/editor/EditorAreaIllustration.java
index ef935df9e..e04235148 100644
--- a/code_samples/editor_basics/src/main/java/org/intellij/sdk/editor/EditorAreaIllustration.java
+++ b/code_samples/editor_basics/src/main/java/org/intellij/sdk/editor/EditorAreaIllustration.java
@@ -41,7 +41,7 @@ public class EditorAreaIllustration extends AnAction {
     int caretOffset = primaryCaret.getOffset();
     // Build and display the caret report.
     String report = logicalPos + "\n" + visualPos + "\n" +
-            "Offset: " + caretOffset;
+        "Offset: " + caretOffset;
     Messages.showInfoMessage(report, "Caret Parameters Inside The Editor");
   }
 
diff --git a/code_samples/editor_basics/src/main/java/org/intellij/sdk/editor/EditorHandlerIllustration.java b/code_samples/editor_basics/src/main/java/org/intellij/sdk/editor/EditorHandlerIllustration.java
index e658612fc..8ed545109 100644
--- a/code_samples/editor_basics/src/main/java/org/intellij/sdk/editor/EditorHandlerIllustration.java
+++ b/code_samples/editor_basics/src/main/java/org/intellij/sdk/editor/EditorHandlerIllustration.java
@@ -34,7 +34,7 @@ public class EditorHandlerIllustration extends AnAction {
     final EditorActionManager actionManager = EditorActionManager.getInstance();
     // Get the action handler registered to clone carets
     final EditorActionHandler actionHandler =
-            actionManager.getActionHandler(IdeActions.ACTION_EDITOR_CLONE_CARET_BELOW);
+        actionManager.getActionHandler(IdeActions.ACTION_EDITOR_CLONE_CARET_BELOW);
     // Clone one caret below the active caret
     actionHandler.execute(editor, editor.getCaretModel().getPrimaryCaret(), e.getDataContext());
   }
diff --git a/code_samples/editor_basics/src/main/java/org/intellij/sdk/editor/EditorIllustrationAction.java b/code_samples/editor_basics/src/main/java/org/intellij/sdk/editor/EditorIllustrationAction.java
index 1d497ded6..3592bde71 100644
--- a/code_samples/editor_basics/src/main/java/org/intellij/sdk/editor/EditorIllustrationAction.java
+++ b/code_samples/editor_basics/src/main/java/org/intellij/sdk/editor/EditorIllustrationAction.java
@@ -44,7 +44,7 @@ public class EditorIllustrationAction extends AnAction {
     // Replace the selection with a fixed string.
     // Must do this document change in a write action context.
     WriteCommandAction.runWriteCommandAction(project, () ->
-            document.replaceString(start, end, "Replacement")
+        document.replaceString(start, end, "Replacement")
     );
     // De-select the text range that was just replaced
     primaryCaret.removeSelection();
@@ -67,7 +67,7 @@ public class EditorIllustrationAction extends AnAction {
     final Editor editor = e.getData(CommonDataKeys.EDITOR);
     // Set visibility and enable only in case of existing project and editor and if a selection exists
     e.getPresentation().setEnabledAndVisible(
-            project != null && editor != null && editor.getSelectionModel().hasSelection()
+        project != null && editor != null && editor.getSelectionModel().hasSelection()
     );
   }
 
diff --git a/code_samples/facet_basics/src/main/java/org/intellij/sdk/facet/DemoFacetConfiguration.java b/code_samples/facet_basics/src/main/java/org/intellij/sdk/facet/DemoFacetConfiguration.java
index 1feb4ae76..43d4d4fbe 100644
--- a/code_samples/facet_basics/src/main/java/org/intellij/sdk/facet/DemoFacetConfiguration.java
+++ b/code_samples/facet_basics/src/main/java/org/intellij/sdk/facet/DemoFacetConfiguration.java
@@ -51,7 +51,7 @@ public class DemoFacetConfiguration implements FacetConfiguration, PersistentSta
   @Override
   public FacetEditorTab[] createEditorTabs(FacetEditorContext context, FacetValidatorsManager manager) {
     return new FacetEditorTab[]{
-            new DemoFacetEditorTab(myFacetState, context, manager)
+        new DemoFacetEditorTab(myFacetState, context, manager)
     };
   }
 
diff --git a/code_samples/facet_basics/src/main/java/org/intellij/sdk/facet/DemoFacetEditorTab.java b/code_samples/facet_basics/src/main/java/org/intellij/sdk/facet/DemoFacetEditorTab.java
index 57f1952c2..b79acd5e5 100644
--- a/code_samples/facet_basics/src/main/java/org/intellij/sdk/facet/DemoFacetEditorTab.java
+++ b/code_samples/facet_basics/src/main/java/org/intellij/sdk/facet/DemoFacetEditorTab.java
@@ -18,6 +18,7 @@ import java.awt.*;
  * Manages validation and modification of the {@link DemoFacet} state.
  */
 public class DemoFacetEditorTab extends FacetEditorTab {
+
   private static final String FACET_PANEL_PROMPT = "Path To SDK: ";
 
   private final DemoFacetState mySettings;
@@ -84,7 +85,7 @@ public class DemoFacetEditorTab extends FacetEditorTab {
     try {
       String newTextContent = myPath.getText();
       mySettings.setDemoFacetState(newTextContent);
-    } catch(Exception e) {
+    } catch (Exception e) {
       throw new ConfigurationException(e.toString());
     }
   }
diff --git a/code_samples/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectCloseListener.java b/code_samples/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectCloseListener.java
index 8aef3961f..925ed621b 100644
--- a/code_samples/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectCloseListener.java
+++ b/code_samples/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectCloseListener.java
@@ -21,7 +21,7 @@ public class ProjectCloseListener implements ProjectManagerListener {
 
     // Get the counting service
     ProjectCountingService projectCountingService =
-            ApplicationManager.getApplication().getService(ProjectCountingService.class);
+        ApplicationManager.getApplication().getService(ProjectCountingService.class);
     // Decrement the count because a project just closed
     projectCountingService.decreaseOpenProjectCount();
   }
diff --git a/code_samples/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectOpenStartupActivity.java b/code_samples/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectOpenStartupActivity.java
index fa057c062..6a54ad9ea 100644
--- a/code_samples/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectOpenStartupActivity.java
+++ b/code_samples/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectOpenStartupActivity.java
@@ -22,7 +22,7 @@ public class ProjectOpenStartupActivity implements StartupActivity.DumbAware {
 
     // Get the counting service
     ProjectCountingService projectCountingService =
-            ApplicationManager.getApplication().getService(ProjectCountingService.class);
+        ApplicationManager.getApplication().getService(ProjectCountingService.class);
     // Increment the project count
     projectCountingService.increaseOpenProjectCount();
 
@@ -33,7 +33,7 @@ public class ProjectOpenStartupActivity implements StartupActivity.DumbAware {
       String message = "<br>The number of open projects exceeds the SDK plugin max_opened_projects limit.<br><br>";
 
       ApplicationManager.getApplication().invokeLater(() ->
-              Messages.showMessageDialog(project, message, title, Messages.getInformationIcon())
+          Messages.showMessageDialog(project, message, title, Messages.getInformationIcon())
       );
     }
   }
diff --git a/code_samples/product_specific/pycharm_basics/src/main/java/org/intellij/sdk/pycharm/PopupDialogAction.java b/code_samples/product_specific/pycharm_basics/src/main/java/org/intellij/sdk/pycharm/PopupDialogAction.java
index 0cbb541a2..5e48dac64 100644
--- a/code_samples/product_specific/pycharm_basics/src/main/java/org/intellij/sdk/pycharm/PopupDialogAction.java
+++ b/code_samples/product_specific/pycharm_basics/src/main/java/org/intellij/sdk/pycharm/PopupDialogAction.java
@@ -26,9 +26,9 @@ public class PopupDialogAction extends AnAction {
   public void actionPerformed(@NotNull AnActionEvent event) {
     Project project = event.getProject();
     Messages.showMessageDialog(project,
-            "Popup dialog action",
-            "Greetings from PyCharm Basics Plugin",
-            Messages.getInformationIcon());
+        "Popup dialog action",
+        "Greetings from PyCharm Basics Plugin",
+        Messages.getInformationIcon());
   }
 
   /**
diff --git a/code_samples/project_model/src/main/java/org/intellij/sdk/project/model/LibrariesAction.java b/code_samples/project_model/src/main/java/org/intellij/sdk/project/model/LibrariesAction.java
index 8397848ce..d224f473a 100644
--- a/code_samples/project_model/src/main/java/org/intellij/sdk/project/model/LibrariesAction.java
+++ b/code_samples/project_model/src/main/java/org/intellij/sdk/project/model/LibrariesAction.java
@@ -84,7 +84,7 @@ public class LibrariesAction extends AnAction {
         fileAndLibs = "None";
       }
       Messages.showInfoMessage("Libraries for file: " + fileAndLibs,
-              "Libraries Info");
+          "Libraries Info");
     }
   }
 
diff --git a/code_samples/project_model/src/main/java/org/intellij/sdk/project/model/ProjectFileIndexSampleAction.java b/code_samples/project_model/src/main/java/org/intellij/sdk/project/model/ProjectFileIndexSampleAction.java
index 7cd424d49..26b10be88 100644
--- a/code_samples/project_model/src/main/java/org/intellij/sdk/project/model/ProjectFileIndexSampleAction.java
+++ b/code_samples/project_model/src/main/java/org/intellij/sdk/project/model/ProjectFileIndexSampleAction.java
@@ -54,11 +54,11 @@ public class ProjectFileIndexSampleAction extends AnAction {
       boolean isInLibraryClasses = projectFileIndex.isInLibraryClasses(virtualFile);
       boolean isInLibrarySource = projectFileIndex.isInLibrarySource(virtualFile);
       Messages.showInfoMessage("Module: " + moduleName + "\n" +
-                      "Module content root: " + moduleContentRoot + "\n" +
-                      "Is library file: " + isLibraryFile + "\n" +
-                      "Is in library classes: " + isInLibraryClasses +
-                      ", Is in library source: " + isInLibrarySource,
-              "Main File Info for" + virtualFile.getName());
+              "Module content root: " + moduleContentRoot + "\n" +
+              "Is library file: " + isLibraryFile + "\n" +
+              "Is in library classes: " + isInLibraryClasses +
+              ", Is in library source: " + isInLibrarySource,
+          "Main File Info for" + virtualFile.getName());
     }
   }
 
diff --git a/code_samples/project_model/src/main/java/org/intellij/sdk/project/model/ShowSourceRootsActions.java b/code_samples/project_model/src/main/java/org/intellij/sdk/project/model/ShowSourceRootsActions.java
index d2f2c096b..6e717396f 100644
--- a/code_samples/project_model/src/main/java/org/intellij/sdk/project/model/ShowSourceRootsActions.java
+++ b/code_samples/project_model/src/main/java/org/intellij/sdk/project/model/ShowSourceRootsActions.java
@@ -32,8 +32,8 @@ public class ShowSourceRootsActions extends AnAction {
       sourceRootsList.append(file.getUrl()).append("\n");
     }
     Messages.showInfoMessage(
-            "Source roots for the " + projectName + " plugin:\n" + sourceRootsList.toString(),
-            "Project Properties"
+        "Source roots for the " + projectName + " plugin:\n" + sourceRootsList.toString(),
+        "Project Properties"
     );
   }
 
diff --git a/code_samples/project_view_pane/src/main/java/org/intellij/sdk/view/pane/ImagesProjectNode.java b/code_samples/project_view_pane/src/main/java/org/intellij/sdk/view/pane/ImagesProjectNode.java
index 28729a3a2..3dc230416 100644
--- a/code_samples/project_view_pane/src/main/java/org/intellij/sdk/view/pane/ImagesProjectNode.java
+++ b/code_samples/project_view_pane/src/main/java/org/intellij/sdk/view/pane/ImagesProjectNode.java
@@ -113,9 +113,9 @@ public class ImagesProjectNode extends ProjectViewNode<VirtualFile> {
                   getImagesFiles(project).clear();
                   scanImages(project);
                   ApplicationManager.getApplication().invokeLater(() ->
-                        ProjectView.getInstance(project)
-                            .getProjectViewPaneById(ImagesProjectViewPane.ID)
-                            .updateFromRoot(true),
+                          ProjectView.getInstance(project)
+                              .getProjectViewPaneById(ImagesProjectViewPane.ID)
+                              .updateFromRoot(true),
                       project.getDisposed()
                   );
                 }
diff --git a/code_samples/psi_demo/src/main/java/org/intellij/sdk/psi/PsiNavigationDemoAction.java b/code_samples/psi_demo/src/main/java/org/intellij/sdk/psi/PsiNavigationDemoAction.java
index f27c0e419..6f184d3fc 100644
--- a/code_samples/psi_demo/src/main/java/org/intellij/sdk/psi/PsiNavigationDemoAction.java
+++ b/code_samples/psi_demo/src/main/java/org/intellij/sdk/psi/PsiNavigationDemoAction.java
@@ -34,15 +34,15 @@ public class PsiNavigationDemoAction extends AnAction {
     if (element != null) {
       PsiMethod containingMethod = PsiTreeUtil.getParentOfType(element, PsiMethod.class);
       infoBuilder
-              .append("Containing method: ")
-              .append(containingMethod != null ? containingMethod.getName() : "none")
-              .append("\n");
+          .append("Containing method: ")
+          .append(containingMethod != null ? containingMethod.getName() : "none")
+          .append("\n");
       if (containingMethod != null) {
         PsiClass containingClass = containingMethod.getContainingClass();
         infoBuilder
-                .append("Containing class: ")
-                .append(containingClass != null ? containingClass.getName() : "none")
-                .append("\n");
+            .append("Containing class: ")
+            .append(containingClass != null ? containingClass.getName() : "none")
+            .append("\n");
 
         infoBuilder.append("Local variables:\n");
         containingMethod.accept(new JavaRecursiveElementVisitor() {
diff --git a/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoConfigurationFactory.java b/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoConfigurationFactory.java
index cf345d4d5..51aa02ffe 100644
--- a/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoConfigurationFactory.java
+++ b/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoConfigurationFactory.java
@@ -24,7 +24,7 @@ public class DemoConfigurationFactory extends ConfigurationFactory {
   @NotNull
   @Override
   public RunConfiguration createTemplateConfiguration(
-          @NotNull Project project) {
+      @NotNull Project project) {
     return new DemoRunConfiguration(project, this, "Demo");
   }
 
diff --git a/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoRunConfiguration.java b/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoRunConfiguration.java
index e9b608d08..e7a3878d4 100644
--- a/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoRunConfiguration.java
+++ b/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoRunConfiguration.java
@@ -51,9 +51,9 @@ public class DemoRunConfiguration extends RunConfigurationBase<DemoRunConfigurat
       @Override
       protected ProcessHandler startProcess() throws ExecutionException {
         GeneralCommandLine commandLine =
-                new GeneralCommandLine(getOptions().getScriptName());
+            new GeneralCommandLine(getOptions().getScriptName());
         OSProcessHandler processHandler = ProcessHandlerFactory.getInstance()
-                .createColoredProcessHandler(commandLine);
+            .createColoredProcessHandler(commandLine);
         ProcessTerminatedListener.attach(processHandler);
         return processHandler;
       }
diff --git a/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoRunConfigurationOptions.java b/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoRunConfigurationOptions.java
index a08058daa..428f848f2 100644
--- a/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoRunConfigurationOptions.java
+++ b/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoRunConfigurationOptions.java
@@ -8,7 +8,7 @@ import com.intellij.openapi.components.StoredProperty;
 public class DemoRunConfigurationOptions extends RunConfigurationOptions {
 
   private final StoredProperty<String> myScriptName =
-          string("").provideDelegate(this, "scriptName");
+      string("").provideDelegate(this, "scriptName");
 
   public String getScriptName() {
     return myScriptName.getValue(this);
diff --git a/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoRunConfigurationType.java b/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoRunConfigurationType.java
index 4db55fefe..e4c06b5c4 100644
--- a/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoRunConfigurationType.java
+++ b/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoRunConfigurationType.java
@@ -11,7 +11,7 @@ public class DemoRunConfigurationType extends ConfigurationTypeBase {
 
   protected DemoRunConfigurationType() {
     super(ID, "Demo", "Demo run configuration type",
-            NotNullLazyValue.createValue(() -> AllIcons.Nodes.Console));
+        NotNullLazyValue.createValue(() -> AllIcons.Nodes.Console));
     addFactory(new DemoConfigurationFactory(this));
   }
 
diff --git a/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoSettingsEditor.java b/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoSettingsEditor.java
index b02f8bbe3..bdd3f9c97 100644
--- a/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoSettingsEditor.java
+++ b/code_samples/run_configuration/src/main/java/org/jetbrains/sdk/runConfiguration/DemoSettingsEditor.java
@@ -17,10 +17,10 @@ public class DemoSettingsEditor extends SettingsEditor<DemoRunConfiguration> {
   public DemoSettingsEditor() {
     scriptPathField = new TextFieldWithBrowseButton();
     scriptPathField.addBrowseFolderListener("Select Script File", null, null,
-            FileChooserDescriptorFactory.createSingleFileDescriptor());
+        FileChooserDescriptorFactory.createSingleFileDescriptor());
     myPanel = FormBuilder.createFormBuilder()
-            .addLabeledComponent("Script file", scriptPathField)
-            .getPanel();
+        .addLabeledComponent("Script file", scriptPathField)
+        .getPanel();
   }
 
   @Override
diff --git a/code_samples/settings/src/main/java/org/intellij/sdk/settings/AppSettingsComponent.java b/code_samples/settings/src/main/java/org/intellij/sdk/settings/AppSettingsComponent.java
index be8c79f84..1de5e949c 100644
--- a/code_samples/settings/src/main/java/org/intellij/sdk/settings/AppSettingsComponent.java
+++ b/code_samples/settings/src/main/java/org/intellij/sdk/settings/AppSettingsComponent.java
@@ -21,10 +21,10 @@ public class AppSettingsComponent {
 
   public AppSettingsComponent() {
     myMainPanel = FormBuilder.createFormBuilder()
-            .addLabeledComponent(new JBLabel("Enter user name: "), myUserNameText, 1, false)
-            .addComponent(myIdeaUserStatus, 1)
-            .addComponentFillVertically(new JPanel(), 0)
-            .getPanel();
+        .addLabeledComponent(new JBLabel("Enter user name: "), myUserNameText, 1, false)
+        .addComponent(myIdeaUserStatus, 1)
+        .addComponentFillVertically(new JPanel(), 0)
+        .getPanel();
   }
 
   public JPanel getPanel() {
diff --git a/code_samples/settings/src/main/java/org/intellij/sdk/settings/AppSettingsState.java b/code_samples/settings/src/main/java/org/intellij/sdk/settings/AppSettingsState.java
index 584c575d4..d32eda189 100644
--- a/code_samples/settings/src/main/java/org/intellij/sdk/settings/AppSettingsState.java
+++ b/code_samples/settings/src/main/java/org/intellij/sdk/settings/AppSettingsState.java
@@ -16,8 +16,8 @@ import org.jetbrains.annotations.Nullable;
  * these persistent application settings are stored.
  */
 @State(
-        name = "org.intellij.sdk.settings.AppSettingsState",
-        storages = @Storage("SdkSettingsPlugin.xml")
+    name = "org.intellij.sdk.settings.AppSettingsState",
+    storages = @Storage("SdkSettingsPlugin.xml")
 )
 public class AppSettingsState implements PersistentStateComponent<AppSettingsState> {
 
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleAnnotator.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleAnnotator.java
index bda4e4485..845edd1e6 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleAnnotator.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleAnnotator.java
@@ -43,9 +43,9 @@ public class SimpleAnnotator implements Annotator {
 
     // highlight "simple" prefix and ":" separator
     holder.newSilentAnnotation(HighlightSeverity.INFORMATION)
-            .range(prefixRange).textAttributes(DefaultLanguageHighlighterColors.KEYWORD).create();
+        .range(prefixRange).textAttributes(DefaultLanguageHighlighterColors.KEYWORD).create();
     holder.newSilentAnnotation(HighlightSeverity.INFORMATION)
-            .range(separatorRange).textAttributes(SimpleSyntaxHighlighter.SEPARATOR).create();
+        .range(separatorRange).textAttributes(SimpleSyntaxHighlighter.SEPARATOR).create();
 
 
     // Get the list of properties for given key
@@ -53,15 +53,15 @@ public class SimpleAnnotator implements Annotator {
     List<SimpleProperty> properties = SimpleUtil.findProperties(element.getProject(), key);
     if (properties.isEmpty()) {
       holder.newAnnotation(HighlightSeverity.ERROR, "Unresolved property")
-              .range(keyRange)
-              .highlightType(ProblemHighlightType.LIKE_UNKNOWN_SYMBOL)
-              // ** Tutorial step 19. - Add a quick fix for the string containing possible properties
-              .withFix(new SimpleCreatePropertyQuickFix(key))
-              .create();
+          .range(keyRange)
+          .highlightType(ProblemHighlightType.LIKE_UNKNOWN_SYMBOL)
+          // ** Tutorial step 19. - Add a quick fix for the string containing possible properties
+          .withFix(new SimpleCreatePropertyQuickFix(key))
+          .create();
     } else {
       // Found at least one property, force the text attributes to Simple syntax value character
       holder.newSilentAnnotation(HighlightSeverity.INFORMATION)
-              .range(keyRange).textAttributes(SimpleSyntaxHighlighter.VALUE).create();
+          .range(keyRange).textAttributes(SimpleSyntaxHighlighter.VALUE).create();
     }
   }
 
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleBlock.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleBlock.java
index 43bf8f4aa..04fb79f0c 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleBlock.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleBlock.java
@@ -29,7 +29,7 @@ public class SimpleBlock extends AbstractBlock {
     while (child != null) {
       if (child.getElementType() != TokenType.WHITE_SPACE) {
         Block block = new SimpleBlock(child, Wrap.createWrap(WrapType.NONE, false), Alignment.createAlignment(),
-                spacingBuilder);
+            spacingBuilder);
         blocks.add(block);
       }
       child = child.getTreeNext();
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleChooseByNameContributor.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleChooseByNameContributor.java
index 786480ecb..4b1604bec 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleChooseByNameContributor.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleChooseByNameContributor.java
@@ -25,7 +25,7 @@ public class SimpleChooseByNameContributor implements ChooseByNameContributorEx
                            @Nullable IdFilter filter) {
     Project project = Objects.requireNonNull(scope.getProject());
     List<String> propertyKeys = ContainerUtil.map(
-            SimpleUtil.findProperties(project), SimpleProperty::getKey);
+        SimpleUtil.findProperties(project), SimpleProperty::getKey);
     ContainerUtil.process(propertyKeys, processor);
   }
 
@@ -34,8 +34,8 @@ public class SimpleChooseByNameContributor implements ChooseByNameContributorEx
                                       @NotNull Processor<? super NavigationItem> processor,
                                       @NotNull FindSymbolParameters parameters) {
     List<NavigationItem> properties = ContainerUtil.map(
-            SimpleUtil.findProperties(parameters.getProject(), name),
-            property -> (NavigationItem) property);
+        SimpleUtil.findProperties(parameters.getProject(), name),
+        property -> (NavigationItem) property);
     ContainerUtil.process(properties, processor);
   }
 
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleColorSettingsPage.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleColorSettingsPage.java
index 2ef858243..0d7c0e1c0 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleColorSettingsPage.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleColorSettingsPage.java
@@ -16,10 +16,10 @@ import java.util.Map;
 public class SimpleColorSettingsPage implements ColorSettingsPage {
 
   private static final AttributesDescriptor[] DESCRIPTORS = new AttributesDescriptor[]{
-          new AttributesDescriptor("Key", SimpleSyntaxHighlighter.KEY),
-          new AttributesDescriptor("Separator", SimpleSyntaxHighlighter.SEPARATOR),
-          new AttributesDescriptor("Value", SimpleSyntaxHighlighter.VALUE),
-          new AttributesDescriptor("Bad value", SimpleSyntaxHighlighter.BAD_CHARACTER)
+      new AttributesDescriptor("Key", SimpleSyntaxHighlighter.KEY),
+      new AttributesDescriptor("Separator", SimpleSyntaxHighlighter.SEPARATOR),
+      new AttributesDescriptor("Value", SimpleSyntaxHighlighter.VALUE),
+      new AttributesDescriptor("Bad value", SimpleSyntaxHighlighter.BAD_CHARACTER)
   };
 
   @Nullable
@@ -38,17 +38,17 @@ public class SimpleColorSettingsPage implements ColorSettingsPage {
   @Override
   public String getDemoText() {
     return "# You are reading the \".properties\" entry.\n" +
-            "! The exclamation mark can also mark text as comments.\n" +
-            "website = https://en.wikipedia.org/\n" +
-            "language = English\n" +
-            "# The backslash below tells the application to continue reading\n" +
-            "# the value onto the next line.\n" +
-            "message = Welcome to \\\n" +
-            "          Wikipedia!\n" +
-            "# Add spaces to the key\n" +
-            "key\\ with\\ spaces = This is the value that could be looked up with the key \"key with spaces\".\n" +
-            "# Unicode\n" +
-            "tab : \\u0009";
+        "! The exclamation mark can also mark text as comments.\n" +
+        "website = https://en.wikipedia.org/\n" +
+        "language = English\n" +
+        "# The backslash below tells the application to continue reading\n" +
+        "# the value onto the next line.\n" +
+        "message = Welcome to \\\n" +
+        "          Wikipedia!\n" +
+        "# Add spaces to the key\n" +
+        "key\\ with\\ spaces = This is the value that could be looked up with the key \"key with spaces\".\n" +
+        "# Unicode\n" +
+        "tab : \\u0009";
   }
 
   @Nullable
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCompletionContributor.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCompletionContributor.java
index 3b261bd97..3d8121606 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCompletionContributor.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCompletionContributor.java
@@ -13,13 +13,13 @@ public class SimpleCompletionContributor extends CompletionContributor {
 
   public SimpleCompletionContributor() {
     extend(CompletionType.BASIC, PlatformPatterns.psiElement(SimpleTypes.VALUE),
-            new CompletionProvider<>() {
-              public void addCompletions(@NotNull CompletionParameters parameters,
-                                         @NotNull ProcessingContext context,
-                                         @NotNull CompletionResultSet resultSet) {
-                resultSet.addElement(LookupElementBuilder.create("Hello"));
-              }
-            }
+        new CompletionProvider<>() {
+          public void addCompletions(@NotNull CompletionParameters parameters,
+                                     @NotNull ProcessingContext context,
+                                     @NotNull CompletionResultSet resultSet) {
+            resultSet.addElement(LookupElementBuilder.create("Hello"));
+          }
+        }
     );
   }
 
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCreatePropertyQuickFix.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCreatePropertyQuickFix.java
index d09143b57..bd8ba8b01 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCreatePropertyQuickFix.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCreatePropertyQuickFix.java
@@ -54,15 +54,15 @@ class SimpleCreatePropertyQuickFix extends BaseIntentionAction {
 
   @Override
   public void invoke(@NotNull final Project project, final Editor editor, PsiFile file) throws
-          IncorrectOperationException {
+      IncorrectOperationException {
     ApplicationManager.getApplication().invokeLater(() -> {
       Collection<VirtualFile> virtualFiles =
-              FileTypeIndex.getFiles(SimpleFileType.INSTANCE, GlobalSearchScope.allScope(project));
+          FileTypeIndex.getFiles(SimpleFileType.INSTANCE, GlobalSearchScope.allScope(project));
       if (virtualFiles.size() == 1) {
         createProperty(project, virtualFiles.iterator().next());
       } else {
         final FileChooserDescriptor descriptor =
-                FileChooserDescriptorFactory.createSingleFileDescriptor(SimpleFileType.INSTANCE);
+            FileChooserDescriptorFactory.createSingleFileDescriptor(SimpleFileType.INSTANCE);
         descriptor.setRoots(ProjectUtil.guessProjectDir(project));
         final VirtualFile file1 = FileChooser.chooseFile(descriptor, project, null);
         if (file1 != null) {
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFindUsagesProvider.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFindUsagesProvider.java
index b56f2cc09..0d69be9c9 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFindUsagesProvider.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFindUsagesProvider.java
@@ -19,9 +19,9 @@ public class SimpleFindUsagesProvider implements FindUsagesProvider {
   @Override
   public WordsScanner getWordsScanner() {
     return new DefaultWordsScanner(new SimpleLexerAdapter(),
-            SimpleTokenSets.IDENTIFIERS,
-            SimpleTokenSets.COMMENTS,
-            TokenSet.EMPTY);
+        SimpleTokenSets.IDENTIFIERS,
+        SimpleTokenSets.COMMENTS,
+        TokenSet.EMPTY);
   }
 
   @Override
@@ -58,8 +58,8 @@ public class SimpleFindUsagesProvider implements FindUsagesProvider {
   public String getNodeText(@NotNull PsiElement element, boolean useFullName) {
     if (element instanceof SimpleProperty) {
       return ((SimpleProperty) element).getKey() +
-              SimpleAnnotator.SIMPLE_SEPARATOR_STR +
-              ((SimpleProperty) element).getValue();
+          SimpleAnnotator.SIMPLE_SEPARATOR_STR +
+          ((SimpleProperty) element).getValue();
     }
     return "";
   }
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFoldingBuilder.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFoldingBuilder.java
index 9e18d6aee..114117112 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFoldingBuilder.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFoldingBuilder.java
@@ -43,16 +43,16 @@ public class SimpleFoldingBuilder extends FoldingBuilderEx implements DumbAware
         if (value != null && value.startsWith(SimpleAnnotator.SIMPLE_PREFIX_STR + SimpleAnnotator.SIMPLE_SEPARATOR_STR)) {
           Project project = literalExpression.getProject();
           String key = value.substring(
-                  SimpleAnnotator.SIMPLE_PREFIX_STR.length() + SimpleAnnotator.SIMPLE_SEPARATOR_STR.length()
+              SimpleAnnotator.SIMPLE_PREFIX_STR.length() + SimpleAnnotator.SIMPLE_SEPARATOR_STR.length()
           );
           // find SimpleProperty for the given key in the project
           SimpleProperty simpleProperty = ContainerUtil.getOnlyItem(SimpleUtil.findProperties(project, key));
           if (simpleProperty != null) {
             // Add a folding descriptor for the literal expression at this node.
             descriptors.add(new FoldingDescriptor(literalExpression.getNode(),
-                    new TextRange(literalExpression.getTextRange().getStartOffset() + 1,
-                            literalExpression.getTextRange().getEndOffset() - 1),
-                    group, Collections.singleton(simpleProperty)));
+                new TextRange(literalExpression.getTextRange().getStartOffset() + 1,
+                    literalExpression.getTextRange().getEndOffset() - 1),
+                group, Collections.singleton(simpleProperty)));
           }
         }
       }
@@ -78,10 +78,10 @@ public class SimpleFoldingBuilder extends FoldingBuilderEx implements DumbAware
       }
 
       String key = text.substring(SimpleAnnotator.SIMPLE_PREFIX_STR.length() +
-              SimpleAnnotator.SIMPLE_SEPARATOR_STR.length());
+          SimpleAnnotator.SIMPLE_SEPARATOR_STR.length());
 
       SimpleProperty simpleProperty = ContainerUtil.getOnlyItem(
-              SimpleUtil.findProperties(psiLiteralExpression.getProject(), key)
+          SimpleUtil.findProperties(psiLiteralExpression.getProject(), key)
       );
       if (simpleProperty == null) {
         return StringUtil.THREE_DOTS;
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFormattingModelBuilder.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFormattingModelBuilder.java
index fe4b2370f..9a1bdfb3c 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFormattingModelBuilder.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFormattingModelBuilder.java
@@ -11,22 +11,22 @@ public class SimpleFormattingModelBuilder implements FormattingModelBuilder {
 
   private static SpacingBuilder createSpaceBuilder(CodeStyleSettings settings) {
     return new SpacingBuilder(settings, SimpleLanguage.INSTANCE)
-            .around(SimpleTypes.SEPARATOR)
-            .spaceIf(settings.getCommonSettings(SimpleLanguage.INSTANCE.getID()).SPACE_AROUND_ASSIGNMENT_OPERATORS)
-            .before(SimpleTypes.PROPERTY)
-            .none();
+        .around(SimpleTypes.SEPARATOR)
+        .spaceIf(settings.getCommonSettings(SimpleLanguage.INSTANCE.getID()).SPACE_AROUND_ASSIGNMENT_OPERATORS)
+        .before(SimpleTypes.PROPERTY)
+        .none();
   }
 
   @Override
   public @NotNull FormattingModel createModel(@NotNull FormattingContext formattingContext) {
     final CodeStyleSettings codeStyleSettings = formattingContext.getCodeStyleSettings();
     return FormattingModelProvider
-            .createFormattingModelForPsiFile(formattingContext.getContainingFile(),
-                    new SimpleBlock(formattingContext.getNode(),
-                            Wrap.createWrap(WrapType.NONE, false),
-                            Alignment.createAlignment(),
-                            createSpaceBuilder(codeStyleSettings)),
-                    codeStyleSettings);
+        .createFormattingModelForPsiFile(formattingContext.getContainingFile(),
+            new SimpleBlock(formattingContext.getNode(),
+                Wrap.createWrap(WrapType.NONE, false),
+                Alignment.createAlignment(),
+                createSpaceBuilder(codeStyleSettings)),
+            codeStyleSettings);
   }
 
 }
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguageCodeStyleSettingsProvider.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguageCodeStyleSettingsProvider.java
index 7add86e57..a336ffc69 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguageCodeStyleSettingsProvider.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguageCodeStyleSettingsProvider.java
@@ -28,18 +28,18 @@ public class SimpleLanguageCodeStyleSettingsProvider extends LanguageCodeStyleSe
   @Override
   public String getCodeSample(@NotNull SettingsType settingsType) {
     return "# You are reading the \".properties\" entry.\n" +
-            "! The exclamation mark can also mark text as comments.\n" +
-            "website = https://en.wikipedia.org/\n" +
-            "\n" +
-            "language = English\n" +
-            "# The backslash below tells the application to continue reading\n" +
-            "# the value onto the next line.\n" +
-            "message = Welcome to \\\n" +
-            "          Wikipedia!\n" +
-            "# Add spaces to the key\n" +
-            "key\\ with\\ spaces = This is the value that could be looked up with the key \"key with spaces\".\n" +
-            "# Unicode\n" +
-            "tab : \\u0009";
+        "! The exclamation mark can also mark text as comments.\n" +
+        "website = https://en.wikipedia.org/\n" +
+        "\n" +
+        "language = English\n" +
+        "# The backslash below tells the application to continue reading\n" +
+        "# the value onto the next line.\n" +
+        "message = Welcome to \\\n" +
+        "          Wikipedia!\n" +
+        "# Add spaces to the key\n" +
+        "key\\ with\\ spaces = This is the value that could be looked up with the key \"key with spaces\".\n" +
+        "# Unicode\n" +
+        "tab : \\u0009";
   }
 
 }
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLineMarkerProvider.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLineMarkerProvider.java
index 94aa4b9b7..4106934eb 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLineMarkerProvider.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLineMarkerProvider.java
@@ -29,22 +29,22 @@ public class SimpleLineMarkerProvider extends RelatedItemLineMarkerProvider {
     PsiLiteralExpression literalExpression = (PsiLiteralExpression) element.getParent();
     String value = literalExpression.getValue() instanceof String ? (String) literalExpression.getValue() : null;
     if ((value == null) ||
-            !value.startsWith(SimpleAnnotator.SIMPLE_PREFIX_STR + SimpleAnnotator.SIMPLE_SEPARATOR_STR)) {
+        !value.startsWith(SimpleAnnotator.SIMPLE_PREFIX_STR + SimpleAnnotator.SIMPLE_SEPARATOR_STR)) {
       return;
     }
 
     // Get the Simple language property usage
     Project project = element.getProject();
     String possibleProperties = value.substring(
-            SimpleAnnotator.SIMPLE_PREFIX_STR.length() + SimpleAnnotator.SIMPLE_SEPARATOR_STR.length()
+        SimpleAnnotator.SIMPLE_PREFIX_STR.length() + SimpleAnnotator.SIMPLE_SEPARATOR_STR.length()
     );
     final List<SimpleProperty> properties = SimpleUtil.findProperties(project, possibleProperties);
     if (properties.size() > 0) {
       // Add the property to a collection of line marker info
       NavigationGutterIconBuilder<PsiElement> builder =
-              NavigationGutterIconBuilder.create(SimpleIcons.FILE)
-                      .setTargets(properties)
-                      .setTooltipText("Navigate to Simple language property");
+          NavigationGutterIconBuilder.create(SimpleIcons.FILE)
+              .setTargets(properties)
+              .setTooltipText("Navigate to Simple language property");
       result.add(builder.createLineMarkerInfo(element));
     }
   }
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReference.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReference.java
index b337eaa05..2285de8f0 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReference.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReference.java
@@ -49,8 +49,8 @@ public class SimpleReference extends PsiReferenceBase<PsiElement> implements Psi
     for (final SimpleProperty property : properties) {
       if (property.getKey() != null && property.getKey().length() > 0) {
         variants.add(LookupElementBuilder
-                .create(property).withIcon(SimpleIcons.FILE)
-                .withTypeText(property.getContainingFile().getName())
+            .create(property).withIcon(SimpleIcons.FILE)
+            .withTypeText(property.getContainingFile().getName())
         );
       }
     }
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReferenceContributor.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReferenceContributor.java
index 91b7af0cb..4d456b536 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReferenceContributor.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReferenceContributor.java
@@ -16,21 +16,21 @@ public class SimpleReferenceContributor extends PsiReferenceContributor {
   @Override
   public void registerReferenceProviders(@NotNull PsiReferenceRegistrar registrar) {
     registrar.registerReferenceProvider(PlatformPatterns.psiElement(PsiLiteralExpression.class),
-            new PsiReferenceProvider() {
-              @Override
-              public PsiReference @NotNull [] getReferencesByElement(@NotNull PsiElement element,
-                                                                     @NotNull ProcessingContext context) {
-                PsiLiteralExpression literalExpression = (PsiLiteralExpression) element;
-                String value = literalExpression.getValue() instanceof String ?
-                        (String) literalExpression.getValue() : null;
-                if ((value != null && value.startsWith(SIMPLE_PREFIX_STR + SIMPLE_SEPARATOR_STR))) {
-                  TextRange property = new TextRange(SIMPLE_PREFIX_STR.length() + SIMPLE_SEPARATOR_STR.length() + 1,
-                          value.length() + 1);
-                  return new PsiReference[]{new SimpleReference(element, property)};
-                }
-                return PsiReference.EMPTY_ARRAY;
-              }
-            });
+        new PsiReferenceProvider() {
+          @Override
+          public PsiReference @NotNull [] getReferencesByElement(@NotNull PsiElement element,
+                                                                 @NotNull ProcessingContext context) {
+            PsiLiteralExpression literalExpression = (PsiLiteralExpression) element;
+            String value = literalExpression.getValue() instanceof String ?
+                (String) literalExpression.getValue() : null;
+            if ((value != null && value.startsWith(SIMPLE_PREFIX_STR + SIMPLE_SEPARATOR_STR))) {
+              TextRange property = new TextRange(SIMPLE_PREFIX_STR.length() + SIMPLE_SEPARATOR_STR.length() + 1,
+                  value.length() + 1);
+              return new PsiReference[]{new SimpleReference(element, property)};
+            }
+            return PsiReference.EMPTY_ARRAY;
+          }
+        });
   }
 
 }
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleSpellcheckingStrategy.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleSpellcheckingStrategy.java
index 7520adfff..eff45dd6a 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleSpellcheckingStrategy.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleSpellcheckingStrategy.java
@@ -18,63 +18,63 @@ import org.jetbrains.annotations.NotNull;
 
 public class SimpleSpellcheckingStrategy extends SpellcheckingStrategy {
 
+  @Override
+  public @NotNull Tokenizer<?> getTokenizer(PsiElement element) {
+    if (element instanceof PsiComment) {
+      return new SimpleCommentTokenizer();
+    }
+
+    if (element instanceof SimpleProperty) {
+      return new SimplePropertyTokenizer();
+    }
+
+    return EMPTY_TOKENIZER;
+  }
+
+  private static class SimpleCommentTokenizer extends Tokenizer<PsiComment> {
+
     @Override
-    public @NotNull Tokenizer<?> getTokenizer(PsiElement element) {
-        if (element instanceof PsiComment) {
-            return new SimpleCommentTokenizer();
+    public void tokenize(@NotNull PsiComment element, TokenConsumer consumer) {
+      // Exclude the start of the comment with its # characters from spell checking
+      int startIndex = 0;
+      for (char c : element.textToCharArray()) {
+        if (c == '#' || Character.isWhitespace(c)) {
+          startIndex++;
+        } else {
+          break;
         }
-
-        if (element instanceof SimpleProperty) {
-            return new SimplePropertyTokenizer();
-        }
-
-        return EMPTY_TOKENIZER;
+      }
+      consumer.consumeToken(element, element.getText(), false, 0,
+          TextRange.create(startIndex, element.getTextLength()),
+          CommentSplitter.getInstance());
     }
 
-    private static class SimpleCommentTokenizer extends Tokenizer<PsiComment> {
+  }
 
-        @Override
-        public void tokenize(@NotNull PsiComment element, TokenConsumer consumer) {
-            // Exclude the start of the comment with its # characters from spell checking
-            int startIndex = 0;
-            for (char c : element.textToCharArray()) {
-                if (c == '#' || Character.isWhitespace(c)) {
-                    startIndex++;
-                } else {
-                    break;
-                }
-            }
-            consumer.consumeToken(element, element.getText(), false, 0,
-                    TextRange.create(startIndex, element.getTextLength()),
-                    CommentSplitter.getInstance());
-        }
+  private static class SimplePropertyTokenizer extends Tokenizer<SimpleProperty> {
 
+    public void tokenize(@NotNull SimpleProperty element, TokenConsumer consumer) {
+      //Spell check the keys and values of properties with different splitters
+      final ASTNode key = element.getNode().findChildByType(SimpleTypes.KEY);
+      if (key != null && key.getTextLength() > 0) {
+        final PsiElement keyPsi = key.getPsi();
+        final String text = key.getText();
+        //For keys, use a splitter for identifiers
+        //Note we set "useRename" to true so that keys will be properly refactored (renamed)
+        consumer.consumeToken(keyPsi, text, true, 0,
+            TextRange.allOf(text), IdentifierSplitter.getInstance());
+      }
+
+      final ASTNode value = element.getNode().findChildByType(SimpleTypes.VALUE);
+      if (value != null && value.getTextLength() > 0) {
+        final PsiElement valuePsi = value.getPsi();
+        final String text = valuePsi.getText();
+        //For values, use a splitter for plain text
+        consumer.consumeToken(valuePsi, text, false, 0,
+            TextRange.allOf(text), PlainTextSplitter.getInstance());
+      }
     }
 
-    private static class SimplePropertyTokenizer extends Tokenizer<SimpleProperty> {
-
-        public void tokenize(@NotNull SimpleProperty element, TokenConsumer consumer) {
-            //Spell check the keys and values of properties with different splitters
-            final ASTNode key = element.getNode().findChildByType(SimpleTypes.KEY);
-            if (key != null && key.getTextLength() > 0) {
-                final PsiElement keyPsi = key.getPsi();
-                final String text = key.getText();
-                //For keys, use a splitter for identifiers
-                //Note we set "useRename" to true so that keys will be properly refactored (renamed)
-                consumer.consumeToken(keyPsi, text, true, 0,
-                        TextRange.allOf(text), IdentifierSplitter.getInstance());
-            }
-
-            final ASTNode value = element.getNode().findChildByType(SimpleTypes.VALUE);
-            if (value != null && value.getTextLength() > 0) {
-                final PsiElement valuePsi = value.getPsi();
-                final String text = valuePsi.getText();
-                //For values, use a splitter for plain text
-                consumer.consumeToken(valuePsi, text, false, 0,
-                        TextRange.allOf(text), PlainTextSplitter.getInstance());
-            }
-        }
-
-    }
+  }
 
 }
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleStructureAwareNavbar.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleStructureAwareNavbar.java
index 12ae99e1f..08d22de14 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleStructureAwareNavbar.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleStructureAwareNavbar.java
@@ -13,32 +13,33 @@ import org.jetbrains.annotations.Nullable;
 import javax.swing.Icon;
 
 public class SimpleStructureAwareNavbar extends StructureAwareNavBarModelExtension {
-    @NotNull
-    @Override
-    protected Language getLanguage() {
-        return SimpleLanguage.INSTANCE;
+
+  @NotNull
+  @Override
+  protected Language getLanguage() {
+    return SimpleLanguage.INSTANCE;
+  }
+
+  @Override
+  public @Nullable String getPresentableText(Object object) {
+    if (object instanceof SimpleFile) {
+      return ((SimpleFile) object).getName();
+    }
+    if (object instanceof SimpleProperty) {
+      return ((SimpleProperty) object).getName();
     }
 
-    @Override
-    public @Nullable String getPresentableText(Object object) {
-        if (object instanceof SimpleFile) {
-            return ((SimpleFile) object).getName();
-        }
-        if (object instanceof SimpleProperty) {
-            return ((SimpleProperty) object).getName();
-        }
+    return null;
+  }
 
-        return null;
+  @Override
+  @Nullable
+  public Icon getIcon(Object object) {
+    if (object instanceof SimpleProperty) {
+      return AllIcons.Nodes.Property;
     }
 
-    @Override
-    @Nullable
-    public Icon getIcon(Object object) {
-        if (object instanceof SimpleProperty) {
-            return AllIcons.Nodes.Property;
-        }
-
-        return null;
-    }
+    return null;
+  }
 
 }
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleStructureViewModel.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleStructureViewModel.java
index 43cd3684e..87fc1434f 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleStructureViewModel.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleStructureViewModel.java
@@ -13,7 +13,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 public class SimpleStructureViewModel extends StructureViewModelBase implements
-        StructureViewModel.ElementInfoProvider {
+    StructureViewModel.ElementInfoProvider {
 
   public SimpleStructureViewModel(@Nullable Editor editor, PsiFile psiFile) {
     super(psiFile, editor, new SimpleStructureViewElement(psiFile));
@@ -39,4 +39,5 @@ public class SimpleStructureViewModel extends StructureViewModelBase implements
   protected Class<?> @NotNull [] getSuitableClasses() {
     return new Class[]{SimpleProperty.class};
   }
+
 }
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleSyntaxHighlighter.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleSyntaxHighlighter.java
index 1ca8c8002..c7d008479 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleSyntaxHighlighter.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleSyntaxHighlighter.java
@@ -17,15 +17,15 @@ import static com.intellij.openapi.editor.colors.TextAttributesKey.createTextAtt
 public class SimpleSyntaxHighlighter extends SyntaxHighlighterBase {
 
   public static final TextAttributesKey SEPARATOR =
-          createTextAttributesKey("SIMPLE_SEPARATOR", DefaultLanguageHighlighterColors.OPERATION_SIGN);
+      createTextAttributesKey("SIMPLE_SEPARATOR", DefaultLanguageHighlighterColors.OPERATION_SIGN);
   public static final TextAttributesKey KEY =
-          createTextAttributesKey("SIMPLE_KEY", DefaultLanguageHighlighterColors.KEYWORD);
+      createTextAttributesKey("SIMPLE_KEY", DefaultLanguageHighlighterColors.KEYWORD);
   public static final TextAttributesKey VALUE =
-          createTextAttributesKey("SIMPLE_VALUE", DefaultLanguageHighlighterColors.STRING);
+      createTextAttributesKey("SIMPLE_VALUE", DefaultLanguageHighlighterColors.STRING);
   public static final TextAttributesKey COMMENT =
-          createTextAttributesKey("SIMPLE_COMMENT", DefaultLanguageHighlighterColors.LINE_COMMENT);
+      createTextAttributesKey("SIMPLE_COMMENT", DefaultLanguageHighlighterColors.LINE_COMMENT);
   public static final TextAttributesKey BAD_CHARACTER =
-          createTextAttributesKey("SIMPLE_BAD_CHARACTER", HighlighterColors.BAD_CHARACTER);
+      createTextAttributesKey("SIMPLE_BAD_CHARACTER", HighlighterColors.BAD_CHARACTER);
 
 
   private static final TextAttributesKey[] BAD_CHAR_KEYS = new TextAttributesKey[]{BAD_CHARACTER};
diff --git a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleUtil.java b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleUtil.java
index 91eb5f0a0..91e4d07a6 100644
--- a/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleUtil.java
+++ b/code_samples/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleUtil.java
@@ -31,7 +31,7 @@ public class SimpleUtil {
   public static List<SimpleProperty> findProperties(Project project, String key) {
     List<SimpleProperty> result = new ArrayList<>();
     Collection<VirtualFile> virtualFiles =
-            FileTypeIndex.getFiles(SimpleFileType.INSTANCE, GlobalSearchScope.allScope(project));
+        FileTypeIndex.getFiles(SimpleFileType.INSTANCE, GlobalSearchScope.allScope(project));
     for (VirtualFile virtualFile : virtualFiles) {
       SimpleFile simpleFile = (SimpleFile) PsiManager.getInstance(project).findFile(virtualFile);
       if (simpleFile != null) {
@@ -51,7 +51,7 @@ public class SimpleUtil {
   public static List<SimpleProperty> findProperties(Project project) {
     List<SimpleProperty> result = new ArrayList<>();
     Collection<VirtualFile> virtualFiles =
-            FileTypeIndex.getFiles(SimpleFileType.INSTANCE, GlobalSearchScope.allScope(project));
+        FileTypeIndex.getFiles(SimpleFileType.INSTANCE, GlobalSearchScope.allScope(project));
     for (VirtualFile virtualFile : virtualFiles) {
       SimpleFile simpleFile = (SimpleFile) PsiManager.getInstance(project).findFile(virtualFile);
       if (simpleFile != null) {
@@ -77,7 +77,7 @@ public class SimpleUtil {
       }
       element = element.getPrevSibling();
     }
-    return StringUtil.join(Lists.reverse(result),"\n ");
+    return StringUtil.join(Lists.reverse(result), "\n ");
   }
 
 }
diff --git a/code_samples/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleCodeInsightTest.java b/code_samples/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleCodeInsightTest.java
index bb028124e..904451512 100644
--- a/code_samples/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleCodeInsightTest.java
+++ b/code_samples/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleCodeInsightTest.java
@@ -47,10 +47,10 @@ public class SimpleCodeInsightTest extends LightJavaCodeInsightFixtureTestCase {
     CodeStyle.getLanguageSettings(myFixture.getFile()).SPACE_AROUND_ASSIGNMENT_OPERATORS = true;
     CodeStyle.getLanguageSettings(myFixture.getFile()).KEEP_BLANK_LINES_IN_CODE = 2;
     WriteCommandAction.writeCommandAction(getProject()).run(() ->
-            CodeStyleManager.getInstance(getProject()).reformatText(
-                    myFixture.getFile(),
-                    ContainerUtil.newArrayList(myFixture.getFile().getTextRange())
-            )
+        CodeStyleManager.getInstance(getProject()).reformatText(
+            myFixture.getFile(),
+            ContainerUtil.newArrayList(myFixture.getFile().getTextRange())
+        )
     );
     myFixture.checkResultByFile("DefaultTestData.simple");
   }
@@ -82,7 +82,7 @@ public class SimpleCodeInsightTest extends LightJavaCodeInsightFixtureTestCase {
 
   public void testReference() {
     PsiReference referenceAtCaret =
-            myFixture.getReferenceAtCaretPositionWithAssertion("ReferenceTestData.java", "DefaultTestData.simple");
+        myFixture.getReferenceAtCaretPositionWithAssertion("ReferenceTestData.java", "DefaultTestData.simple");
     final SimpleProperty resolvedSimpleProperty = assertInstanceOf(referenceAtCaret.resolve(), SimpleProperty.class);
     assertEquals("https://en.wikipedia.org/", resolvedSimpleProperty.getValue());
   }
diff --git a/code_samples/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleParsingTest.java b/code_samples/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleParsingTest.java
index 60c52cdfc..91f56446f 100644
--- a/code_samples/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleParsingTest.java
+++ b/code_samples/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleParsingTest.java
@@ -13,7 +13,7 @@ public class SimpleParsingTest extends ParsingTestCase {
   public void testParsingTestData() {
     doTest(true);
   }
-  
+
   /**
    * @return path to test data file directory relative to root of this module.
    */
diff --git a/code_samples/tool_window/src/main/java/org/intellij/sdk/toolWindow/CalendarToolWindowFactory.java b/code_samples/tool_window/src/main/java/org/intellij/sdk/toolWindow/CalendarToolWindowFactory.java
index bbf448bdf..be3ed2917 100644
--- a/code_samples/tool_window/src/main/java/org/intellij/sdk/toolWindow/CalendarToolWindowFactory.java
+++ b/code_samples/tool_window/src/main/java/org/intellij/sdk/toolWindow/CalendarToolWindowFactory.java
@@ -80,8 +80,8 @@ public class CalendarToolWindowFactory implements ToolWindowFactory, DumbAware {
 
     private String getCurrentDate(Calendar calendar) {
       return calendar.get(Calendar.DAY_OF_MONTH) + "/"
-              + (calendar.get(Calendar.MONTH) + 1) + "/"
-              + calendar.get(Calendar.YEAR);
+          + (calendar.get(Calendar.MONTH) + 1) + "/"
+          + calendar.get(Calendar.YEAR);
     }
 
     private String getTimeZone(Calendar calendar) {
@@ -102,5 +102,7 @@ public class CalendarToolWindowFactory implements ToolWindowFactory, DumbAware {
     public JPanel getContentPanel() {
       return contentPanel;
     }
+
   }
+
 }