How to test if code compiles without mandatory warnings?

I could not find a way to test if compile succeeded without [mandatory warnings](https://docs.oracle.com/javase/8/docs/api/javax/tools/Diagnostic.Kind.html#MANDATORY_WARNING), commonly generated when `-Xlint` options are on.
Is that something that would fit under current `compileWithoutWarnings` behaviour or new api method, or not considered at all in near future?
