public function setCallback(Callable $callback, bool $force = false){

            if($force || !$this->parentCallback){
                $this->parentCallback = $callback;
            }
            
            return $this;

        }
public function setCallback(Callable $callback, bool $force = false){

            if($force || !$this->parentCallback){
                $this->parentCallback = $callback;
            }
            
            return $this;

        }
public function setCallback ( Callable $ callback , bool $ force = false ) { if ( $ force || ! $ this -> parentCallback ) { $ this -> parentCallback = $ callback ; } return $ this ; }
Set a callback

@param Callable $callback
@param bool $force

@return self
Set a callback