V4: Mock Raise DisconnectedAsync

[SymbioticKilla]

Hi,

I want to raise an event from Mock<IMqttClient>. With this example I'm getting System.Reflection.TargetParameterCountException: 'Parameter count mismatch.' What is the right way to configure Raises() for DisconnectedAsync?

mockClient
.Setup(c => c.DisconnectAsync(
                    It.IsAny<MqttClientDisconnectOptions>(),
                    CancellationToken.None))
.Returns(Task.FromResult(new MqttClientConnectResult()))
.Raises(x => x.DisconnectedAsync += null, new MqttClientDisconnectedEventArgs());

Thanks!