function callbackCommandPrefixChange(?\CharlotteDunois\Yasmin\Models\Guild $guild, ?string $prefix) {
        if(!empty($this->setup[$this->getGuildID($guild)])) {
            return;
        }
        
        $this->set($guild, 'commandPrefix', $prefix);
    }
function callbackCommandPrefixChange(?\CharlotteDunois\Yasmin\Models\Guild $guild, ?string $prefix) {
        if(!empty($this->setup[$this->getGuildID($guild)])) {
            return;
        }
        
        $this->set($guild, 'commandPrefix', $prefix);
    }
function callbackCommandPrefixChange ( ? \ CharlotteDunois \ Yasmin \ Models \ Guild $ guild , ? string $ prefix ) { if ( ! empty ( $ this -> setup [ $ this -> getGuildID ( $ guild ) ] ) ) { return ; } $ this -> set ( $ guild , 'commandPrefix' , $ prefix ) ; }
The callback for the command prefix change event.
@param \CharlotteDunois\Yasmin\Models\Guild|null  $guild
@param string|null                                $prefix
@return void
The callback for the command prefix change event .