public function dispatch() {
		if ( ! isset( $this->post_id, $this->post_thumbnail ) ) {
			// since this is a developer error we are not localizing this error string
			throw new InvalidArgumentException( 'Post ID and featured image should be set before trying to dispatch.' );
		}

		$this->data( array( 'post_id' => $this->post_id, 'post_thumbnail' => trim( $this->post_thumbnail ) ) );

		return parent::dispatch();
	}