Mediator API

The mediator pattern in Trax.Mediator routes train execution by input type. Instead of injecting specific train interfaces, you inject ITrainBus and dispatch by passing the input object. The bus discovers and runs the correct train automatically.

// Instead of:
var result = await _createOrderTrain.Run(orderInput);
 
// You can:
var result = await _trainBus.RunAsync<OrderResult>(orderInput);

This decouples callers from specific train implementations and enables train composition (a junction can dispatch another train; the child is recorded as a run of its own, not linked to the parent, see Nested Trains).