Change or remove the username of a supergroup/channel
boolFalse#bc799737 = Bool;
boolTrue#997275b5 = Bool;
channels.updateUsername#3514b3de channel:InputChannel username:string = Bool;
|New username, pass an empty string to remove the username
|You're admin of too many public channels, make some channels private to change the username of this channel.
|The provided channel is invalid.
|You haven't joined this channel/supergroup.
|You must be an admin in this chat to do this.
|No changes were made to chat information because the new information you passed is identical to the current information.
|You can't write in this chat.
|The provided username is not valid.
|The username was not modified.
|The provided username is already occupied.
|The specified username can be purchased on https://fragment.com.