Identifier of the chat in which to find message position.
Filter for message content; searchMessagesFilterEmpty, searchMessagesFilterUnreadMention, searchMessagesFilterUnreadReaction, and searchMessagesFilterFailedToSend are unsupported in this function.
Message identifier.
If not 0, only messages in the specified thread will be considered; supergroups only.
If not 0, only messages in the specified Saved Messages topic will be considered; pass 0 to consider all relevant messages, or for chats other than Saved Messages.
Returns approximate 1-based position of a message among messages, which can be found by the specified filter in the chat. Cannot be used in secret chats. Request type for Tdjson#getChatMessagePosition.