wp_is_application_passwords_available_for_user example

 else {
            $error = new WP_Error(
                'invalid_username',
                __( '<strong>Error:</strong> Unknown username. Check again or try your email address.' )
            );
        }
    } elseif ( ! wp_is_application_passwords_available() ) {
        $error = new WP_Error(
            'application_passwords_disabled',
            __( 'Application passwords are not available.' )
        );
    } elseif ( ! wp_is_application_passwords_available_for_user( $user ) ) {
        $error = new WP_Error(
            'application_passwords_disabled_for_user',
            __( 'Application passwords are not available for your account. Please contact the site administrator for assistance.' )
        );
    }

    if ( $error ) {
        /** * Fires when an application password failed to authenticate the user. * * @since 5.6.0 * * @param WP_Error $error The authentication error. */

if ( ! $user_id && IS_PROFILE_PAGE ) {
    $user_id = $current_user->ID;
} elseif ( ! $user_id && ! IS_PROFILE_PAGE ) {
    wp_die( __( 'Invalid user ID.' ) );
} elseif ( ! get_userdata( $user_id ) ) {
    wp_die( __( 'Invalid user ID.' ) );
}

wp_enqueue_script( 'user-profile' );

if ( wp_is_application_passwords_available_for_user( $user_id ) ) {
    wp_enqueue_script( 'application-passwords' );
}

if ( IS_PROFILE_PAGE ) {
    // Used in the HTML title tag.     $title = __( 'Profile' );
} else {
    // Used in the HTML title tag.     /* translators: %s: User's display name. */
    $title = __( 'Edit User %s' );
}

wp_die(
        __( 'Your website appears to use Basic Authentication, which is not currently compatible with application passwords.' ),
        __( 'Cannot Authorize Application' ),
        array(
            'response'  => 501,
            'link_text' => __( 'Go Back' ),
            'link_url'  => $reject_url ? add_query_arg( 'error', 'disabled', $reject_url ) : admin_url(),
        )
    );
}

if ( ! wp_is_application_passwords_available_for_user( $user ) ) {
    if ( wp_is_application_passwords_available() ) {
        $message = __( 'Application passwords are not available for your account. Please contact the site administrator for assistance.' );
    } else {
        $message = __( 'Application passwords are not available.' );
    }

    wp_die(
        $message,
        __( 'Cannot Authorize Application' ),
        array(
            'response'  => 501,
            

$user = get_userdata( $id );
        }

        if ( empty( $user ) || ! $user->exists() ) {
            return $error;
        }

        if ( is_multisite() && ! user_can( $user->ID, 'manage_sites' ) && ! is_user_member_of_blog( $user->ID ) ) {
            return $error;
        }

        if ( ! wp_is_application_passwords_available_for_user( $user ) ) {
            return new WP_Error(
                'application_passwords_disabled_for_user',
                __( 'Application passwords are not available for your account. Please contact the site administrator for assistance.' ),
                array( 'status' => 501 )
            );
        }

        return $user;
    }

    /** * Gets the requested application password for a user. * * @since 5.6.0 * * @param WP_REST_Request $request The request object. * @return array|WP_Error The application password details if found, a WP_Error otherwise. */