reactive/Ix.NET/Source/System.Linq.Async/System/Threading/Tasks/TaskExt.cs

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the Apache 2.0 License.
// See the LICENSE file in the project root for more information. 

namespace System.Threading.Tasks
{
    internal static class TaskExt
    {
        public static readonly TaskCompletionSource<bool> True;

        static TaskExt()
        {
            True = new TaskCompletionSource<bool>();
            True.SetResult(true);
        }
    }
}