java/typeMigration/src/META-INF/TypeMigration.xml

<idea-plugin>
  <extensions defaultExtensionNs="com.intellij">
    <codeInsight.changeVariableTypeQuickFixProvider
        implementation="com.intellij.refactoring.typeMigration.TypeMigrationVariableTypeFixProvider"/>
    <conversion.rule implementation="com.intellij.refactoring.typeMigration.rules.ListArrayConversionRule"/>
    <conversion.rule implementation="com.intellij.refactoring.typeMigration.rules.AtomicConversionRule"/>
    <conversion.rule implementation="com.intellij.refactoring.typeMigration.rules.BoxingTypeConversionRule"/>
    <conversion.rule implementation="com.intellij.refactoring.typeMigration.rules.ElementToArrayConversionRule"/>
    <conversion.rule implementation="com.intellij.refactoring.typeMigration.rules.ThreadLocalConversionRule"/>
    <intentionAction>
      <className>com.intellij.refactoring.typeMigration.intentions.ConvertFieldToAtomicIntention</className>
       <category>Concurrency</category>
    </intentionAction>
    <intentionAction>
      <className>com.intellij.refactoring.typeMigration.intentions.ConvertFieldToThreadLocalIntention</className>
      <category>Concurrency</category>
    </intentionAction>
    <intentionAction>
      <className>com.intellij.refactoring.typeMigration.intentions.ChangeClassParametersIntention</className>
      <category>Declaration</category>
    </intentionAction>
  </extensions>
</idea-plugin>