code: def url(self):
          
          if not self.URL_TEMPLATE:
              raise NotImplementedError
          return self.URL_TEMPLATE.format(self=self)
docs: The fetching target URL.
  
          The default behavior of this property is build URL string with the
          :const:`~brownant.dinergate.Dinergate.URL_TEMPLATE`.
  
          The subclasses could override
          :const:`~brownant.dinergate.Dinergate.URL_TEMPLATE` or use a different
          implementation.