checkArgument(
          afterEveryChars > 0, "Cannot add a separator after every %s chars", afterEveryChars);
    }

    @Override
    CharSequence trimTrailingPadding(CharSequence chars) {
      return delegate.trimTrailingPadding(chars);
    }

    @Override
    int maxEncodedSize(int bytes) {
      int unseparatedSize = delegate.maxEncodedSize(bytes);
      return unseparatedSize