code: @Nullable
    public static Integer parseIntObj (@Nullable final String sStr)
    {
      return parseIntObj (sStr, DEFAULT_RADIX, null);
    }
docs: Parse the given {@link String} as {@link Integer} with radix
  {@value #DEFAULT_RADIX}.
  
  @param sStr
  The string to parse. May be <code>null</code>.
  @return <code>null</code> if the string does not represent a valid value.