verifyBarPass(method, bar); // only pass if 1st param throws NPE
        } else {
          verifyBarFail(method, bar);
        }
      }
    }
  }

  public void testTwoArgNullableNormal() throws Exception {
    Method method = TwoArg.class.getMethod("nullableNormal", String.class, Integer.class);
    for (TwoArg.Action first : TwoArg.Action.values()) {