Chat identifier.
Forum topic identifier.
Identifier of the message starting from which history must be fetched; use 0 to get results from the last message.
The maximum number of messages to be returned; must be positive and can't be greater than 100. If the offset is negative, then the limit must be greater than or equal to -offset. For optimal performance, the number of returned messages is chosen by TDLib and can be smaller than the specified limit.
Specify 0 to get results from exactly the message from_message_id or a negative number from -99 to -1 to get additionally -offset newer messages.
Returns messages in a topic in a forum supergroup chat or a chat with a bot with topics. The messages are returned in reverse chronological order (i.e., in order of decreasing message_id). For optimal performance, the number of returned messages is chosen by TDLib. Request type for Tdjson#getForumTopicHistory.