  public function IsHTML($ishtml = true) {
    if ($ishtml) {
      $this->ContentType = 'text/html';
    } else {
      $this->ContentType = 'text/plain';
    }
  }
The product receives input or data, but it does
        not validate or incorrectly validates that the input has the
        properties that are required to process the data safely and
        correctly.