@Nullable
  public static GrDocCommentOwner findDocOwner(GroovyDocPsiElement docElement) {
    PsiElement element = docElement;
    while (element != null && element.getParent() instanceof GroovyDocPsiElement) element = element.getParent();
    if (element == null) return null;

    element = skipWhiteSpacesAndStopOnDoc(element, true);

    if (element instanceof GrDocCommentOwner) return (GrDocCommentOwner)element;
    if (element instanceof GrMembersDeclaration) {
      GrMember[] members = ((GrMembersDeclaration)element).getMembers();
      if (members.length > 0 && members[0] instanceof GrDocCommentOwner) {
        return (GrDocCommentOwner)members[0];
      }
    }
    return null;
  }
@Nullable
  public static GrDocCommentOwner findDocOwner(GroovyDocPsiElement docElement)