interpolator = new MessageInterpolatorFactory(validatorFactory).getInstance();
validator = new MockValidator();
withConstraint = instanceFor(MyController.class, getMethod("withConstraint",String.class));
withoutConstraint = instanceFor(MyController.class, getMethod("withoutConstraint",String.class));
withoutConstraintAndDomainObject = instanceFor(MyController.class, getMethod("withoutConstraintAndDomainObject",Example.class));
instance = new DefaultControllerInstance(new MyController());
}