Chat ID or username
Optional
icon?: null | LongNew icon of the topic.
Can be a custom emoji ID, or null
to remove the icon
and use static color instead
Optional
shouldDispatch?: trueWhether to dispatch the returned service message (if any) to the client's update handler.
Optional
title?: stringNew topic title
ID of the topic (i.e. its top message ID)
Service message about the modification
Modify a topic in a forum
Only admins with
manageTopics
permission can do this.