code: def improve_model_docstring(app, what, name, obj, options, lines):
      
      if what == 'class':
          _improve_class_docs(app, obj, lines)
      elif what == 'attribute':
          _improve_attribute_docs(obj, name, lines)
      elif what == 'method':
          _improve_method_docs(obj, name, lines)
  
      # Return the extended docstring
      return lines
docs: Hook that improves the autodoc docstrings for Django models.
  
      :type app: sphinx.application.Sphinx
      :param what: The parent type, ``class`` or ``module``
      :type what: str
      :param name: The dotted path to the child method/attribute.
      :type name: str
      :param obj: The Python object that i s being documented.
      :param options: The current autodoc settings.
      :type options: dict
      :param lines: The current documentation lines
      :type lines: list