docs: private void cacheResponseInfo(final httpClientInteraction method, final File cacheFile) {
          //write cache data to file if present
          Properties newprops = new Properties();
  
          if (null != method.getResponseHeader(LAST_MODIFIED)) {
              newprops.setProperty(LAST_MODIFIED, method.getResponseHeader(LAST_MODIFIED).getValue());
          }
          if (null != method.getResponseHeader(E_TAG)) {
              newprops.setProperty(E_TAG, method.getResponseHeader(E_TAG).getValue());
          }
          if (null != method.getResponseHeader(CONTENT_TYPE)) {
              newprops.setProperty(CONTENT_TYPE, method.getResponseHeader(CONTENT_TYPE).getValue());
          }
          if (newprops.size() > 0) {
              try {
                  final FileOutputStream fileOutputStream = new FileOutputStream(cacheFile);
                  try {
                      newprops.store(fileOutputStream, "URLFileUpdater cache data for URL: "+url);
                  } finally {
                      fileOutputStream.close();
                  }
              } catch (IOException e) {
                  logger.debug(
                      "Failed to write cache header info to file: " + cacheFile + ", " + e.getMessage(), e);
              }
          } else if (cacheFile.exists()) {
              if(!cacheFile.delete()) {
                  logger.warn("Unable to delete cachefile: " + cacheFile.getAbsolutePath());
              }
          }
      }