Removes all pinned messages from a forum topic; requires can_pin_messages member right in the supergroup. Request type for Tdjson#unpinAllMessageThreadMessages.
Identifier of the chat.
Message thread identifier in which messages will be unpinned.
Removes all pinned messages from a forum topic; requires can_pin_messages member right in the supergroup. Request type for Tdjson#unpinAllMessageThreadMessages.