See JDK-8150111.

The other bug discusses how signatures that take Iterable<Path> are problematic, because Path itself implements iterable<Path>.

This affected setLocationFromPaths and getJavaFileObjectsFromPaths. However only setLocationFromPaths was fixed in 9.

It would be nice to fix getJavaFileObjectsFromPaths too. Iterable<Path> and Collection<Path> have different erasures, so perhaps we could add getJavaFileObjectsFromPaths(Collection<Path>), deprecate getJavaFileObjectsFromPaths(Iterable<Path>), and add a default implementation that delegates to the new method.