original_string: public function isHTML($isHtml = true)
      {
          if ($isHtml) {
              $this->ContentType = static::CONTENT_TYPE_TEXT_HTML;
          } else {
              $this->ContentType = static::CONTENT_TYPE_PLAINTEXT;
          }
      }
code: public function isHTML($isHtml = true)
      {
          if ($isHtml) {
              $this->ContentType = static::CONTENT_TYPE_TEXT_HTML;
          } else {
              $this->ContentType = static::CONTENT_TYPE_PLAINTEXT;
          }
      }
code_tokens: public function isHTML ( $ isHtml = true ) { if ( $ isHtml ) { $ this -> ContentType = static :: CONTENT_TYPE_TEXT_HTML ; } else { $ this -> ContentType = static :: CONTENT_TYPE_PLAINTEXT ; } }
docstring: Sets message type to HTML or plain.
  
  @param bool $isHtml True for HTML mode
docstring_tokens: Sets message type to HTML or plain .