public DetailViewModel(CharacterItemViewModel character,
IOpenWebService openWebService = null)
{
Character = character;
_openWebService = openWebService ?? Locator.Current.GetService <IOpenWebService>();
OpenWeb = ReactiveCommand.Create(() => _openWebService.OpenUrl(Character.Thumbnail));
}
void NavigateToDetailPage(CharacterItemViewModel item)
{
HostScreen.Router.Navigate.Execute(new DetailViewModel(item)).Subscribe();
}