public PresentationContact contactToPresentationContact(Contact contact) {
   PresentationContact presentationContact = new PresentationContact();
   presentationContact.setIdContact(contact.getIdContact());
   presentationContact.setFirstName(contact.getFirstName());
   presentationContact.setLastName(contact.getLastName());
   presentationContact.setEmail(contact.getEmail());
   presentationContact.setPhone(contact.getPhone());
   return presentationContact;
 }
 public Contact presentationContactToContact(PresentationContact presentationContact) {
   Contact contact = new Contact();
   contact.setIdContact(presentationContact.getIdContact());
   contact.setFirstName(presentationContact.getFirstName());
   contact.setLastName(presentationContact.getLastName());
   contact.setEmail(presentationContact.getEmail());
   contact.setPhone(presentationContact.getPhone());
   return contact;
 }