@Override
      public boolean isAcceptable(Object element, PsiElement context) {
        if (element instanceof XmlTag tag) {
          final DomElement domElement = DomManager.getDomManager(tag.getProject()).getDomElement(tag);
          return domElement instanceof RngDefine;
        }
        return false;
      }
@Override
      public boolean isAcceptable(Object element, PsiElement context)