Simple Bus implementation

gistfile1.cs

public class Bus : IBus
{
    // this is our dependency that will publish the message to a queue (or somewhere else)
    private IMessageDispatcher messageDispatcher;

    public void Publish<T>(Action<T> action) where T : IMessage
    {
        var newInstance = CreateInstance<T>();
        
        // pass the new instance to the action (by reference)
        action(newInstance);

        messageDispatcher.Publish(newInstance);
    }

    private T CreateInstance<T>()
    {
        var result = default(T);

        // do something clever creating an initialized T instance
        
        return result;
    }
}