Xamarin.Forms by Microsoft

<PackageReference Include="Xamarin.Forms" Version="4.8.0.1143-pre1" />

.NET API 1,400,448 bytes

 AsyncValue<T>

public sealed class AsyncValue<T> : INotifyPropertyChanged
For internal use by the Xamarin.Forms platform.
public static AsyncValue<T> Null { get; }

For internal use by the Xamarin.Forms platform.

public bool IsRunning { get; set; }

For internal use by the Xamarin.Forms platform.

public T Value { get; }

For internal use by the Xamarin.Forms platform.

public event PropertyChangedEventHandler PropertyChanged

For internal use by the Xamarin.Forms platform.

public AsyncValue(Task<T> valueTask, T defaultValue = null)