private function get_images( $args = array(), $additional_mime_types = array() ) {
		$mime_types = array_merge( array( 'image' ), $additional_mime_types );

		$query_args = array(
			'post_type'      => 'attachment',
			'post__in'       => $args,
			'post_mime_type' => $mime_types,
			'post_status'    => 'any',
			'posts_per_page' => -1,
		);

		return new WP_Query( $query_args );
	}