[//]: # (title: Incompatible Changes in IntelliJ Platform and Plugins API 2021.*) Please see [Incompatible API Changes](api_changes_list.md) on how to verify compatibility. > Changes from API marked with `org.jetbrains.annotations.ApiStatus.@Experimental`/`ScheduledForRemoval` are not listed here, as incompatible changes are to be expected. > {type="note"} ## 2021.1 ### Changes in IntelliJ Platform 2021.1 `com.intellij.util.io.PersistentHashMap.isCorrupted` method removed : The storage checks for corruption automatically, there is no need of any explicit additional checks.