code: def get_template_name(self, request):
          
          if not hasattr(self, "template_name"):
              raise AttributeError("%s must have a template_name attribute or "
                                   "override the get_template_name method."
                                   % self.__class__.__name__)
          return self.template_name
docs: Returns the name of the template to be used for rendering this tab.
  
          By default it returns the value of the ``template_name`` attribute
          on the ``Tab`` class.