def METHOD_NAME(
    self, *, count: Optional[int] = None, worker: str = ""
) -> Collection[TrialInterface]:
    """Returns Trials to be evaluated by worker.
    Args:
      count: Number of suggestions.
      worker: When new Trials are generated, their `assigned_worker` field is
        populated with this worker. suggest() first looks for existing Trials
        that are assigned to `worker`, before generating new ones.
    Returns:
      Trials.
    """