application_name_exists_for_user example

    public static function create_new_application_password( $user_id, $args = array() ) {
        if ( ! empty( $args['name'] ) ) {
            $args['name'] = sanitize_text_field( $args['name'] );
        }

        if ( empty( $args['name'] ) ) {
            return new WP_Error( 'application_password_empty_name', __( 'An application name is required to create an application password.' ), array( 'status' => 400 ) );
        }

        if ( self::application_name_exists_for_user( $user_id, $args['name'] ) ) {
            return new WP_Error( 'application_password_duplicate_name', __( 'Each application name should be unique.' ), array( 'status' => 409 ) );
        }

        $new_password    = wp_generate_password( static::PW_LENGTH, false );
        $hashed_password = wp_hash_password( $new_password );

        $new_item = array(
            'uuid'      => wp_generate_uuid4(),
            'app_id'    => empty( $args['app_id'] ) ? '' : $args['app_id'],
            'name'      => $args['name'],
            'password'  => $hashed_password,