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add_filter('b2bking_visibility_taxonomy', function($val){
    $taxonomy = 'brand'; // replace with your custom taxonomy
    return $taxonomy;
}, 10, 1);
add_action('wp_loaded', function(){
    $taxonomy = 'brand'; // replace with your custom taxonomy
    global $b2bking_admin;
    remove_action( 'product_cat_add_form_fields', array($b2bking_admin, 'b2bking_enable_visibility_settings_add_category'), 10, 2 );
    remove_action( 'product_cat_edit_form_fields', array($b2bking_admin, 'b2bking_enable_visibility_settings_edit_category'), 10, 1);
    remove_action('edited_product_cat', array($b2bking_admin, 'b2bking_save_category_visibility_meta_settings'), 10, 1);
    remove_action('create_product_cat', array($b2bking_admin, 'b2bking_save_category_visibility_meta_settings'), 10, 1);
    add_action( $taxonomy.'_add_form_fields', array($b2bking_admin, 'b2bking_enable_visibility_settings_add_category'), 10, 2 );
    add_action( $taxonomy.'_edit_form_fields', array($b2bking_admin, 'b2bking_enable_visibility_settings_edit_category'), 10, 1);
    add_action('edited_'.$taxonomy, array($b2bking_admin, 'b2bking_save_category_visibility_meta_settings'), 10, 1);
    add_action('create_'.$taxonomy, array($b2bking_admin, 'b2bking_save_category_visibility_meta_settings'), 10, 1);
}, 10);