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"/>
  </extensionPoints>
</idea-plugin>