def METHOD_NAME(self) -> None:
    indexes = [
        IndexModel([("sender_id", pymongo.ASCENDING), ("event.event", pymongo.ASCENDING)]),
        IndexModel([("type", pymongo.ASCENDING), ("timestamp", pymongo.ASCENDING)]),
        IndexModel([("sender_id", pymongo.ASCENDING), ("conversation_id", pymongo.ASCENDING)]),
        IndexModel([("event.event", pymongo.ASCENDING), ("event.timestamp", pymongo.DESCENDING)]),
        IndexModel([("event.name", pymongo.ASCENDING), ("event.timestamp", pymongo.DESCENDING)]),
        IndexModel([("event.timestamp", pymongo.DESCENDING)])
    ]
    self.conversations.create_indexes(indexes)