return userData[key]
        }

        void putUserData(String key, Object value) {
            userData[key] = value
        }
    }

    ClassPool instanceScopedPool = new ClassPool()

    JApiClass apiClass = Stub(JApiClass)

    def setup() {
        instanceScopedPool.appendSystemPath()
    }

    void noViolation(def rule) {
        assert rule.maybeViolation(apiClass) == null

        } else {
            this.acceptedApiChanges = Collections.emptySet();
        }
    }

    @Override
    @SuppressWarnings("unchecked")
    public void execute(ViolationCheckContext context) {
        Map<String, Object> userData = (Map<String, Object>) context.getUserData();
        userData.put("acceptedApiChanges", acceptedApiChanges);