/**
  * Cria um componente Option e agrega ao Select
  *
  * @param text $label            
  * @param text $value            
  * @param boolean $selected            
  */
 public function createOption($label, $value, $selected = false)
 {
     $option = new SimpleTag("option", $label);
     $decorator = new HtmlTagDecorator($option);
     $decorator->appendValue($value);
     if ($selected === true) {
         $decorator->appendSelected();
     }
     $this->appendOption($decorator);
     return $this;
 }