public static void saveToFile(CustomTestStep customStep, IFile file) {
   String xml = new CubicTestXStream().toXML(customStep);
   try {
     String charset = TestPersistance.getCharset(file.getLocation().toFile());
     String charsetHeader = TestPersistance.getCharsetHeader(charset);
     xml = charsetHeader + "\n" + xml;
     FileUtils.writeStringToFile(file.getLocation().toFile(), xml, charset);
   } catch (IOException e) {
     ErrorHandler.logAndRethrow(e);
   }
 }