docs: public void initialize() {
          try {
              if (tidyInstance == null) {
                  tidyInstance = new Tidy();
                  tidyInstance.setXHTML(true);
                  tidyInstance.setShowWarnings(false);
                  tidyInstance.setQuiet(true);
                  tidyInstance.setEscapeCdata(true);
                  tidyInstance.setTidyMark(false);
  
                  if (tidyConfiguration != null) {
                      tidyInstance.setConfigurationFromFile(tidyConfiguration.getFile().getAbsolutePath());
                  }
              }
          } catch (IOException e) {
              throw new CitrusRuntimeException("Failed to initialize XHTML tidy instance");
          }
      }