kotlin-fork/idea/resources/META-INF/extensions/ide-frontend-independent.xml

<idea-plugin>
  <extensionPoints>
    <extensionPoint qualifiedName="org.jetbrains.kotlin.beforeResolveHighlightingVisitor"
                    interface="org.jetbrains.kotlin.idea.highlighter.BeforeResolveHighlightingExtension"/>
    <extensionPoint qualifiedName="org.jetbrains.kotlin.binaryExtension" interface="org.jetbrains.kotlin.idea.util.KotlinBinaryExtension"/>
    <extensionPoint qualifiedName="org.jetbrains.kotlin.buildSystemTypeDetector"
                    interface="org.jetbrains.kotlin.idea.configuration.BuildSystemTypeDetector"
                    dynamic="true"/>
    <extensionPoint qualifiedName="org.jetbrains.kotlin.projectConfigurator"
                    interface="org.jetbrains.kotlin.idea.configuration.KotlinProjectConfigurator"
                    dynamic="true"/>
    <extensionPoint qualifiedName="org.jetbrains.kotlin.newFileHook"
                    interface="org.jetbrains.kotlin.idea.actions.NewKotlinFileHook"/>
  </extensionPoints>

  <extensions defaultExtensionNs="com.intellij">
    <registryKey key="kotlin.formatter.allowTrailingCommaInAnyProject"
                 description="Allow a trailing comma regardless of plugin version"
                 defaultValue="false"
                 restartRequired="false"/>
    <registryKey key="kotlin.formatter.allowTrailingCommaOnCallSite"
                 description="Allow a trailing comma on call-site"
                 defaultValue="false"
                 restartRequired="false"/>

    <moduleBuilder builderClass="org.jetbrains.kotlin.tools.projectWizard.wizard.NewProjectWizardModuleBuilder"/>
  </extensions>

  <extensions defaultExtensionNs="org.jetbrains.kotlin">
    <projectConfigurator implementation="org.jetbrains.kotlin.idea.configuration.KotlinJavaModuleConfigurator"/>
    <projectConfigurator implementation="org.jetbrains.kotlin.idea.configuration.KotlinJsModuleConfigurator"/>
  </extensions>
</idea-plugin>