given:
        def task = expectTaskCreated(TaskWithNestedBeanWithPrivateClass, [existingFile, null] as Object[])

        when:
        execute(task)

        then:
        def e = thrown WorkValidationException
        validateException(task, false, e,
            missingValueMessage { type(TaskWithNestedBeanWithPrivateClass.canonicalName).property('bean.inputFile').includeLink() },

        public List<?> getBeans() {
            return ImmutableList.of(bean);
        }
    }

    public static class TaskWithNestedBeanWithPrivateClass extends TaskWithAction {
        Bean2 bean = new Bean2();

        @Inject
        public TaskWithNestedBeanWithPrivateClass(File inputFile, File inputFile2) {
            bean.inputFile = inputFile;
            bean.inputFile2 = inputFile2;
        }