code: def run(self) -> None:
      self.validate()
      assert self._models
  
      try:
          CssTemplateDAO.delete(self._models)
      except DAODeleteFailedError as ex:
          logger.exception(ex.exception)
          raise CssTemplateDeleteFailedError() from ex
  
file_path: superset/superset/commands/css/delete.py
imports: import logging
  from typing import Optional
  from superset.commands.base import BaseCommand
  from superset.commands.css.exceptions import CssTemplateDeleteFailedError, CssTemplateNotFoundError
  from superset.daos.css import CssTemplateDAO
  from superset.daos.exceptions import DAODeleteFailedError
  from superset.models.core import CssTemplate
label_desc: Use image node_id 2 for calling the DeleteCssTemplateCommand obj's underlying member method code with example usage: obj.run() without return types