@Override
  public ImmutableDomainObjectSet<InternalIdeaSourceDirectory> getResourceDirectories() {
    if (myGradleVersionComparator.lessThan("4.7")) {
      throw unsupportedMethod("IdeaContentRoot.getResourceDirectories()");
    }
    return wrap(resourceDirectories);
  }
@Override
  public ImmutableDomainObjectSet<InternalIdeaSourceDirectory> getResourceDirectories()