def UnfreezeTimestamp(self):
    if not self.prev_frozen_timestamps:
      raise RuntimeError("Unbalanced UnfreezeTimestamp call.")
    self.frozen_timestamp = self.prev_frozen_timestamps.pop()
Unfreezes the timestamp used for resolve/delete database queries.
dataset/ETHPy150Open google/grr/grr/lib/queue_manager.py/QueueManager.UnfreezeTimestamp