public Interest assemble(InterestDTO interestDTO) {
   Interest interest = new Interest();
   interest.setId(interestDTO.getId());
   interest.setName(interestDTO.getName());
   return interest;
 }
 public InterestDTO assembleDTO(Interest interest) {
   InterestDTO interestDTO = new InterestDTO();
   interestDTO.setName(interest.getName());
   interestDTO.setId(interest.getId());
   return interestDTO;
 }