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

def parse_dota_um(self, event):
        """
        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
        """
        if event.type == dota_usermessages_pb2.CHAT_MESSAGE_AEGIS:
            self.aegis.append((self.tick, event.playerid_1))