def map_output(self, node_id, node_output_name, parameter_name):
self.output_mapping[parameter_name] = (node_id, node_output_name)<EOL>dependents = self.dependents_by_node_id.get(node_id, set())<EOL>dependents.add('<STR_LIT>'.format(parameter_name))<EOL>self.dependents_by_node_id[node_id] = dependents<EOL>
Maps the output from a node to a workflow output.

:param node_id: The id of the node to map from.
:param node_output_name: The output parameter name for the node task to map to the workflow output.
:param parameter_name: The workflow output parameter name.