code: def delete_authoring_nodes(self, editor):
          
  
          editor_node = foundations.common.get_first_item(self.get_editor_nodes(editor))
          file_node = editor_node.parent
          self.unregister_editor(editor_node)
          self.unregister_file(file_node, raise_exception=False)
          return True
docs: Deletes the Model authoring Nodes associated with given editor.
  
          :param editor: Editor.
          :type editor: Editor
          :return: Method success.
          :rtype: bool