pocketmine\event\block\BlockFormEvent::__construct PHP Method

    public function __construct(Block $block, Block $newState)
    {
        parent::__construct($block, $newState);
    }

 public function __construct(Block $block, Block $source, Block $newState)
 {
     parent::__construct($block, $newState);
     $this->source = $source;
 }