code: public static byte[] decodeToBytes(String string, String enc)
        throws UnsupportedEncodingException {
      return decode(string.getBytes(enc));
    }
docs: Decode a Base64 encoded String. Characters that are not part of the Base64 alphabet are ignored
  in the input.
  
  @param string The data to decode.
  @param enc Character encoding to use when converting from bytes.
  @return decoded data.
  @throws UnsupportedEncodingException if the character encoding specified is not supported.
  @since ostermillerutils 1.02.16