def __init__(self, message_ids=[], message_epoch_secs={}):
     self._msg = Message()
     self._message_ids = []
     self._message_epoch_secs = message_epoch_secs
     if message_ids != []:
         self.setMessageIDs(message_ids)
 def _extract_message_epoch_secs(self, mids):
     """Adds message EpochSecs to the internal dictionary for the referenced messages."""
     msg = Message()
     for mid in mids:
         msg.setMessageID(mid)
         self._message_epoch_secs[mid] = msg.EpochSecs