private async Task DoSelectItem(InstallerItemViewModel customerItem)
 {
     await Task.Run(() =>
     {
         ShowViewModel <InstallerDetailsViewModel>(customerItem);
     });
 }
        public void Init(InstallerItemViewModel item)
        {
            Id = item.Id;

            Name          = item.Name;
            EmailAddress  = item.EmailAddress;
            ContactPerson = item.ContactPerson;
            PhoneNumber   = item.PhoneNumber;

            EmailAddress = item.EmailAddress;
            PhoneNumber  = item.PhoneNumber;
            MobileNumber = item.MobileNumber;
            WebAddress   = item.WebAddress;
        }