}

    @Override
    public Action<? super Task> whenObjectRemoved(Action<? super Task> action) {
        throw new UnsupportedOperationException("Registering actions on task removal is not supported.");
    }

    @Override
    public void whenObjectRemoved(Closure action) {
        throw new UnsupportedOperationException("Registering actions on task removal is not supported.");

        def allArtifacts = master.allArtifacts

        def added = []
        allArtifacts.whenObjectAdded { added << it.name }
        def removed = []
        allArtifacts.whenObjectRemoved { removed << it.name }

        expect:
        allArtifacts.empty

        when:
        masterParent1.artifacts << artifact("p1-1")
        masterParent1Parent1.artifacts << artifact("p1p1-1")

Method <org.gradle.api.DomainObjectCollection.whenObjectRemoved(groovy.lang.Closure)> has arguments/return type groovy.lang.Closure that is not Gradle public API or primitive or built-in JDK classes or Kotlin classes in (DomainObjectCollection.java:0)