code: def from_api_repr(cls, resource, client):
          
          sink_name = resource["name"]
          instance = cls(sink_name, client=client)
          instance._update_from_api_repr(resource)
          return instance
docs: Factory:  construct a sink given its API representation
  
          :type resource: dict
          :param resource: sink resource representation returned from the API
  
          :type client: :class:`google.cloud.logging.client.Client`
          :param client: Client which holds credentials and project
                         configuration for the sink.
  
          :rtype: :class:`google.cloud.logging.sink.Sink`
          :returns: Sink parsed from ``resource``.
          :raises: :class:`ValueError` if ``client`` is not ``None`` and the
                   project from the resource does not agree with the project
                   from the client.