holder; } public function onOpen() : void{ parent::onOpen(); $block = $this->holder->getWorld()->getBlock($this->holder); if($block instanceof AnimatedContainer){ $block->onContainerOpen(); } } public function onClose() : void{ $block = $this->holder->getWorld()->getBlock($this->holder); if($block instanceof AnimatedContainer){ $block->onContainerClose(); } parent::onClose(); } }