@NotNull
  @VisibleForTesting
  public Result convertString(@NotNull String text) {
    final String[] strings = splitWords(text);
    if (strings.length > 0) {
      final StringBuilder buf = new StringBuilder();
      buf.append(StringUtil.toLowerCase(strings[0]));
      for (int i = 1; i < strings.length; i++) {
        String string = strings[i];
        if (Character.isLetterOrDigit(string.charAt(0))) {
          buf.append(StringUtil.capitalize(StringUtil.toLowerCase(string)));
        }
      }
      return new TextResult(buf.toString());
    }
    return new TextResult("");
  }
@NotNull
  @VisibleForTesting
  public Result convertString(@NotNull String text)