private bool AddMatchedUser(BookSyncContact phoneContact, FacebookUser facebookUser)
        {
            if (facebookUser == null)
            {
                return(false);
            }

            BookSyncContact matchedContact = new BookSyncContact();

            matchedContact.PhoneFirstName   = phoneContact.PhoneFirstName;
            matchedContact.PhoneLastName    = phoneContact.PhoneLastName;
            matchedContact.PhoneContactId   = phoneContact.PhoneContactId;
            matchedContact.PhoneImageBase64 = phoneContact.PhoneImageBase64;

            matchedContact.FacebookFirstName     = facebookUser.FirstName;
            matchedContact.FacebookLastName      = facebookUser.LastName;
            matchedContact.FacebookUserId        = facebookUser.ID;
            matchedContact.FacebookImageSmallUrl = facebookUser.ProfileImageSmallUrl;
            matchedContact.FacebookImageLargeUrl = facebookUser.ProfileImageLargeUrl;

            matchedContact.SelectionChange += (sender, e) => OnPropertyChanged(nameof(HasMatchedContacts));

            AutoMatchedContacts.Add(matchedContact);

            return(true);
        }