public void Construct(ContactButton.Factory contactButtonFactory, ContactsManager contactsManager, ButtonClickObserver buttonClickObserver)
 {
     this.contactButtonFactory = contactButtonFactory;
     this.contactsManager      = contactsManager;
     this.buttonClickObserver  = buttonClickObserver;
 }
 public void Construct(ContactButton.Factory contactButtonFactory, ContactsManager contactsManager)
 {
     this.contactButtonFactory = contactButtonFactory;
     this.contactsManager      = contactsManager;
 }