mono/netcore/System.Private.CoreLib/shared/System/Threading/TimerQueue.Unix.cs

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

namespace System.Threading
{
    internal partial class TimerQueue
    {
        private static long TickCount64 => Environment.TickCount64;
    }
}