System.Net.WebSockets.ManagedWebSocket.DisposeCore C# (CSharp) Method

        private void DisposeCore()
        {
            Debug.Assert(Monitor.IsEntered(StateUpdateLock), $"Expected {nameof(StateUpdateLock)} to be held");
            if (!_disposed)
            {
                _disposed = true;
                _keepAliveTimer?.Dispose();
                _stream?.Dispose();
                if (_state < WebSocketState.Aborted)
                {
                    _state = WebSocketState.Closed;
                }
            }
        }