Carbon_Fields\Container\User_Meta_Container::save PHP Method

    public function save($user_id)
    {
        // Unhook action to garantee single save
        remove_action('profile_update', array($this, '_save'));
        $this->set_user_id($user_id);
        foreach ($this->fields as $field) {
            $field->set_value_from_input();
            $field->save();
        }
        do_action('carbon_after_save_user_meta', $user_id);
    }