GetOptionKit\Option::desc PHP Method

    public function desc($desc)
    {
        $this->desc = $desc;
    }

 /**
  * add( [spec string], [desc string] )
  *
  * add( [option object] )
  */
 public function add()
 {
     $num = func_num_args();
     $args = func_get_args();
     $first = $args[0];
     if (is_object($first) && $first instanceof Option) {
         $this->addObject($first);
     } else {
         if (is_string($first)) {
             $specString = $args[0];
             $desc = isset($args[1]) ? $args[1] : null;
             $key = isset($args[2]) ? $args[2] : null;
             // parse spec string
             $spec = new Option($specString);
             if ($desc) {
                 $spec->desc($desc);
             }
             if ($key) {
                 $spec->key = $key;
             }
             $this->add($spec);
             return $spec;
         } else {
             throw new Exception('Unknown Spec Type');
         }
     }
 }