def _get_composition_collection(self, composition_id):
collection = JSONClientValidated('<STR_LIT>',<EOL>collection='<STR_LIT>',<EOL>runtime=self._runtime)<EOL>composition_map = collection.find_one({'<STR_LIT>': ObjectId(composition_id.get_identifier())})<EOL>if '<STR_LIT>' not in composition_map:<EOL><INDENT>raise errors.NotFound('<STR_LIT>')<EOL><DEDENT>return composition_map, collection<EOL>
Returns a Mongo Collection and Composition given a Composition Id