code: public function getSql()
      {
          $code = $this;
          while ($code->parent !== null) {
              $code = $code->parent;
          }
  
          return mb_substr($code->content, $this->startOffset, $this->endOffset - $this->startOffset, 'UTF-8');
      }
docs: Returns the SQL code representing the token.
  @return string SQL code.