docs: def set_deserializer_by_mime_type(self, mime_type):
          """
          :param mime_type:
          :return:
  
          Used by content_type_set to set get a reference to the serializer object
          """
  
          for deserializer in self._deserializers:
              if deserializer.content_type() == mime_type:
                  self._selected_deserializer = deserializer
                  return
  
          raise exception.UnsupportedContentTypeError(mime_type, self.supported_mime_types_str)