Parser: Backslash double-quote in double-quoted string not recognized

https://tools.ietf.org/html/rfc6020#section-6.1.3
If a string is enclosed in double-quotes, and the string itself contains a double-quote character, the character should be written as this: \"

But ODL currently seems to misinterpret that, possibly as a single backslash.
Example model to follow shortly.