CSF Callback Testsing

<?php



if (!class_exists('CSF_Callback_Testing')) {
    class CSF_Callback_Testing
    {

        public $prefix = '_testing_callback';
        public $options;
        public $post_types = '';


        public function __construct()
        {
            $this->columns_settings();
            $this->options = get_option($this->prefix);

        }


        public function columns_settings()
        {

            if (!class_exists('CSF')) {
                return;
            }


            // CSF Options
            \CSF::createOptions($this->prefix, array(

                // Framework Title
                'framework_title'         => 'Testing Callback <small>by Jewel Theme</small>',
                'framework_class'         => 'testing-callback',

                // menu settings
                'menu_title'              => 'Testing Callback',
                'menu_slug'               => 'testing-callback',
                'menu_type'               => 'submenu', // menu, submenu, options, theme, etc.
                'menu_capability'         => 'manage_options',
                'menu_icon'               => '',
                'menu_position'           => 44,
                'menu_hidden'             => false,
                'menu_parent'             => 'csf-settings',

                // menu extras
                'show_bar_menu'           => true,
                'show_sub_menu'           => true,
                'show_in_network'         => true,
                'show_in_customizer'      => false,

                'show_search'             => false,
                'show_reset_all'          => false,
                'show_reset_section'      => false,
                'show_footer'             => true,
                'show_all_options'        => true,
                'show_form_warning'       => true,
                'sticky_header'           => false,
                'save_defaults'           => true,
                'ajax_save'               => true,

                // admin bar menu settings
                'admin_bar_menu_icon'     => '',
                'admin_bar_menu_priority' => 45,

                // footer
                'footer_text'             => '',
                'footer_after'            => '',
                'footer_credit'           => '',

                // database model
                'database'                => 'network', // options, transient, theme_mod, network(multisite support)
                'transient_time'          => 0,

                // contextual help
                'contextual_help'         => array(),
                'contextual_help_sidebar' => '',

                // typography options
                'enqueue_webfont'         => true,
                'async_webfont'           => false,

                // others
                'output_css'              => true,

                // theme and wrapper classname
                'nav'                     => 'normal',
                'theme'                   => 'dark',
            ));

            // Testing Callback Settings
            \CSF::createSection($this->prefix, array(
                'title'       => 'Others',
                'icon'        => 'fas fa-bolt',
                'fields'      => array(
                    array(
                        'id'          => 'post_types',
                        'type'        => 'select',
                        'title'       => 'Select Post Types',
                        'placeholder' => 'Select a post type',
                        'options'     => 'post_types',
                    ),

                    array(
                        'type'     => 'callback',
                        'function' => 'CSF_Callback_Testing::my_callback_functiossn',
                    ),

                )
            ));
        }

        public static function my_callback_functiossn()
        {
            echo 'ljasdhlfjks';
        }
    }
}