protected override async void OnAppearing()
{
base.OnAppearing();
var graphQuery = "query{ user(login: marcofolio){ name bio company location followers(first: 10) { nodes { id name } } } }";
var user = await _graphQLService.Query <User>("https://api.github.com/graphql", graphQuery);
Name.Text = user.name;
Bio.Text = user.bio.ToString();
Followers.ItemsSource = user.followers.nodes.Where(u => !string.IsNullOrEmpty(u.name)).Select(u => u.name);
}