code: private static APPIOSApplication copyOfSafari(File xcodeInstall, String sdk) {
      File
          copy =
          new File(IOSServer.getTmpIOSFolder().getAbsolutePath(),
                   "safariCopies/safari-" + sdk + ".app");
      if (!copy.exists()) {
        File safariFolder = APPIOSApplication.findSafariLocation(xcodeInstall, sdk);
        copy.mkdirs();
        try {
          FileUtils.copyDirectory(safariFolder, copy);
        } catch (IOException e) {
          log.warning("Cannot create the copy of safari : " + e.getMessage());
        }
      }
      return new APPIOSApplication(copy.getAbsolutePath());
    }
docs: TODO freynaud - if xcode change, the safari copy should be wiped out.