Polls the status of the current operation.

        Uses gRPC request to check.

        :rtype: :class:`~google.longrunning.operations_pb2.Operation`
        :returns: The latest status of the current operation.

def _get_operation_rpc(self):
        """Polls the status of the current operation.

        Uses gRPC request to check.

        :rtype: :class:`~google.longrunning.operations_pb2.Operation`
        :returns: The latest status of the current operation.
        """
        request_pb = operations_pb2.GetOperationRequest(name=self.name)
        return self.client._operations_stub.GetOperation(request_pb)