def set_sequence_key(self, filename, sequence_key):
    self.sequence_keys[filename] = sequence_key
Fuzzy result rank should be based on shortest match.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/files/file_service_stub.py/BlobstoreStorage.set_sequence_key--crossover with--dataset/ETHPy150Open dbcli/pgcli/tests/test_fuzzy_completion.py/test_ranking_based_on_shortest_match