System.Net.WebSockets.WebSocketBase.OutstandingOperationHelper.Dispose C# (CSharp) Method

            public void Dispose()
            {
                if (_isDisposed)
                {
                    return;
                }

                CancellationTokenSource snapshot = null;
                lock (_thisLock)
                {
                    if (_isDisposed)
                    {
                        return;
                    }

                    _isDisposed = true;
                    snapshot = _cancellationTokenSource;
                    _cancellationTokenSource = null;
                }

                if (snapshot != null)
                {
                    snapshot.Dispose();
                }
            }