Bugs?

Are the following sample programs defective?

add_action( 'wpel_link', ( $link_object ) {
    if ( $link_object->is_external() ) {
        // get current url
        $url = $link_object->getAttribute( 'href' );

        // set redirect url
        $redirect_url = '//somedom.com?url='. urlencode( $url );
        $link_object->setAttribute( 'href', $redirect_url );
    }
}, 10, 1 );

↓

add_action( 'wpel_link', function( $link_object ) {
    if ( $link_object->is_external() ) {
        // get current url
        $url = $link_object->get_attr( 'href' );

        // set redirect url
        $redirect_url = '//somedom.com?url='. urlencode( $url );
        $link_object->set_attr( 'href', $redirect_url );
    }
}, 10, 1 );