docs: protected void parseRootElement() {
  
      JobExecutorXmlImpl jobExecutor = new JobExecutorXmlImpl();
      List<ProcessEngineXml> processEngines = new ArrayList<ProcessEngineXml>();
  
      for (Element element : rootElement.elements()) {
  
        if(JOB_EXECUTOR.equals(element.getTagName())) {
          parseJobExecutor(element, jobExecutor);
  
        } else if(PROCESS_ENGINE.equals(element.getTagName())) {
          parseProcessEngine(element, processEngines);
  
        }
  
      }
  
      bpmPlatformXml = new BpmPlatformXmlImpl(jobExecutor, processEngines);
    }