code: @Nullable
    @ReturnsMutableCopy
    public static byte [] safeDecode (@Nullable final byte [] aEncodedBytes, final int nOptions)
    {
      if (aEncodedBytes != null)
        return safeDecode (aEncodedBytes, 0, aEncodedBytes.length, nOptions);
      return null;
    }
docs: Decode the byte array.
  
  @param aEncodedBytes
  The encoded byte array.
  @param nOptions
  Decoding options.
  @return <code>null</code> if decoding failed.