We currently have no test that calls ThreadReference.interrupt() on a vthread. The one ThreadReference.interrupt() test I could find is the following:

vmTestbase/nsk/jdi/ThreadReference/interrupt/interrupt001.java

However, it was never adapted to use the JDIThreadFactory, so the test threads are never vthreads. I took a stab at fixing it to use JDIThreadFActory, but then ran into a problem because the test relies on Thread.resume() and this is not supported for vthreads.