[Bartweiss]

I was thinking about a condition that's specifically for "inherited but not supported", but that's pretty close to what I had in mind, yes.

Java doesn't have a language-level exception that's specifically for unusable methods, which can be a bit awkward. UnsupportedOperationException is the recommended answer, but it's relatively nonspecific as to why your operation wasn't supported. Apache's Commons extends that with NotImplementedException for cases where the call isn't definitionally impossible (e.g. adding to an unmodifiable map), but no implementation exists.