PersonUM1 person2 = new PersonUM1();
person2.setPersonId("unimanytoone_2");
person2.setPersonName("Vivek");
AddressUM1 address = new AddressUM1();
address.setAddressId("unimanytoone_a");
address.setStreet("AAAAAAAAAAAAA");
person1.setAddress(address);
person2.setAddress(address);
Set<PersonUM1> persons = new HashSet<PersonUM1>();