Client results

[Th3Hunger]

How can the server request a result from a client? as shown below

https://learn.microsoft.com/en-us/aspnet/core/signalr/hubs?view=aspnetcore-7.0#client-results

Example in C# Client:

 hubConnection.On("GetMessage", async () =>
{
    Console.WriteLine("Enter message:");
    var message = await Console.In.ReadLineAsync();
    return message;
});

How can I send results back to the server within an event?