intellij-sdk-code-samples/simple_language_plugin/src/com/simpleplugin/SimpleRefactoringSupportProvider.java

package com.simpleplugin;

import com.intellij.lang.refactoring.RefactoringSupportProvider;
import com.intellij.psi.PsiElement;
import com.simpleplugin.psi.SimpleProperty;

public class SimpleRefactoringSupportProvider extends RefactoringSupportProvider {
  @Override
  public boolean isMemberInplaceRenameAvailable(PsiElement element, PsiElement context) {
    return element instanceof SimpleProperty;
  }
}