def add(self, destination):
        self._destinations.append(destination)
Extracts the mutation operation from this datatype, if any.
dataset/ETHPy150Open ClusterHQ/eliot/eliot/_output.py/Destinations.add--crossover with--dataset/ETHPy150Open basho/riak-python-client/riak/datatypes/datatype.py/Datatype.to_op