def METHOD_NAME():
  """Uses the usernames in the given usernames file to produce predictions.
  The model expects all features to be populated, although predictions are only
  made with usernames. So, as a preprocessing step, stubbed features are passed
  to the model along with each username.
  """
  params = _parse_arguments(sys.argv)
  instances = _get_instances(params.usernames)
  predictions = _predict_json(params.project, params.model, instances,
                              params.version)
  _print_predictions(instances, predictions)