public function render()
{
$this->loadAssets();
$args = $this->arguments;
$seq = $this->seq();
// set width, height
$args = array_add($args, 'width', 420);
$args = array_add($args, 'height', 420);
// render template
$this->template = \View::make($this->view, ['args' => $args, 'seq' => $seq])->render();
return parent::render();
}