BeanInvocation beanInvocation = new BeanInvocation();
beanInvocation.setMethod(MultiPartCustomerService.class.getMethod("saveCustomerToo",
SaveCustomer.class, Product.class, Holder.class));
Customer customer = new Customer();
customer.setName("TestCustomerToo");
customer.setRevenue(50000);
SaveCustomer saveCustomer = new SaveCustomer();
saveCustomer.setCustomer(customer);
Product product = new Product();
product.setName("Multiuse Product");