namespace Nito.AsyncEx { public static class TaskExtensions { public static Task WaitAsync(this Task this, CancellationToken cancellationToken); public static Task<Task> WhenAny(this IEnumerable<Task> this, CancellationToken cancellationToken); public static Task<Task> WhenAny(this IEnumerable<Task> this); public static Task WhenAll(this IEnumerable<Task> this); public static Task<TResult> WaitAsync<TResult>(this Task<TResult> this, CancellationToken cancellationToken); public static Task<Task<TResult>> WhenAny<TResult>(this IEnumerable<Task<TResult>> this, CancellationToken cancellationToken); public static Task<Task<TResult>> WhenAny<TResult>(this IEnumerable<Task<TResult>> this); public static Task<TResult[]> WhenAll<TResult>(this IEnumerable<Task<TResult>> this); } }