public function __construct( $download = 0 ) {
		parent::__construct( $download );

		if ( is_numeric( $download ) && $download > 0 ) {
			$this->set_id( $download );
		} elseif ( $download instanceof self ) {
			$this->set_id( $download->get_id() );
		} elseif ( is_object( $download ) && ! empty( $download->permission_id ) ) {
			$this->set_id( $download->permission_id );
			$this->set_props( (array) $download );
			$this->set_object_read( true );
		} else {
			$this->set_object_read( true );
		}

		$this->data_store = WC_Data_Store::load( 'customer-download' );

		if ( $this->get_id() > 0 ) {
			$this->data_store->read( $this );
		}
	}