code: def parse_dota_um(self, event):
          
          if event.type == dota_usermessages_pb2.CHAT_MESSAGE_AEGIS:
              self.aegis.append((self.tick, event.playerid_1))
docs: The chat messages that arrive when certain events occur.
          The most useful ones are CHAT_MESSAGE_RUNE_PICKUP,
          CHAT_MESSAGE_RUNE_BOTTLE, CHAT_MESSAGE_GLYPH_USED,
          CHAT_MESSAGE_TOWER_KILL