code: def serialize(self, value, **kwargs):
          
          kwargs.update({'include_class': kwargs.get('include_class', True)})
          if self.serializer is not None:
              return self.serializer(value, **kwargs)
          if value is None:
              return None
          serial_list = [self.prop.serialize(val, **kwargs)
                         for val in value]
          return serial_list
docs: Return a serialized copy of the tuple