/**
  * Reads the options from options table
  *
  * @since  1.0.0
  */
 public function refresh()
 {
     $option_key = $this->option_key();
     $settings = MS_Factory::get_option($option_key);
     MS_Factory::populate_model($this, $settings);
     wp_cache_set($option_key, $this, 'MS_Model_Option');
 }