private List<String> getParameters(RunConfigInternal runConfig) {
   List<String> params = new ArrayList<String>(3);
   params.add(WEB_SERVER_PARAM);
   params.add(runConfig.getServer());
   String relativeDocumentRoot = runConfig.getRelativeDocumentRoot();
   if (relativeDocumentRoot != null) {
     params.add(DOCUMENT_ROOT_PARAM);
     params.add(relativeDocumentRoot);
   }
   String routerRelativePath = runConfig.getRouterRelativePath();
   if (StringUtils.hasText(routerRelativePath)) {
     params.add(routerRelativePath);
   }
   return params;
 }