static function register_assets() 
    {    
        \wp_enqueue_script( 'jquery' );
        \wp_enqueue_script( 'jquery-ui' );
        \wp_enqueue_script( 'jquery-ui-datepicker' );
        \wp_enqueue_script( 'jquery-ui-spinner' );
        \wp_enqueue_script( 'jquery-ui-slider' );
        \wp_enqueue_script( 'jquery-ui-resizable' );
        \wp_enqueue_script( 'wp-color-picker' );
        
        \wp_enqueue_script( 'amarkal', AMARKAL_ASSETS_URL.'js/amarkal.min.js', array('jquery'), AMARKAL_VERSION, true );
        \wp_enqueue_script( 'select2', AMARKAL_ASSETS_URL.'js/select2.min.js', array('jquery'), '4.0.3', true );
        \wp_enqueue_script( 'ace-editor', 'https://cdnjs.cloudflare.com/ajax/libs/ace/1.2.6/ace.js', array(), '1.2.6', true );
        
        \wp_enqueue_style( 'font-awesome', '//maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css', array(), '4.7.0' );
        \wp_enqueue_style( 'amarkal', AMARKAL_ASSETS_URL.'css/amarkal.min.css', array('wp-color-picker'), AMARKAL_VERSION );
        \wp_enqueue_style( 'select2', AMARKAL_ASSETS_URL.'css/select2.min.css', array(), '4.0.3' );
    }