def _require_context(self):
        if not self._context:
            raise ContextRequired()
Add a parameter to a field into script_fields
dataset/ETHPy150Open basho/riak-python-client/riak/datatypes/datatype.py/Datatype._require_context--crossover with--dataset/ETHPy150Open aparo/pyes/pyes/scriptfields.py/ScriptFields.add_parameter