original_string: public function setEmptyText($text = null)
      {
          $this->empty_text = $text === null ? $this->default_empty_text : $text;
  
          return $this;
      }
code: public function setEmptyText($text = null)
      {
          $this->empty_text = $text === null ? $this->default_empty_text : $text;
  
          return $this;
      }
code_tokens: public function setEmptyText ( $ text = null ) { $ this -> empty_text = $ text === null ? $ this -> default_empty_text : $ text ; return $ this ; }
docstring: Sets default text which is displayed on a null-value option.
  
  Set to "Select.." or "Pick one.."
  
  @param string $text Pass null to use default text, empty string - disable
  
  @return $this
docstring_tokens: Sets default text which is displayed on a null - value option .