protected T RaiseEvent <T, U>(U mappingSource) where T : IEvent, new()
{
Precondition.For(mappingSource, nameof(mappingSource)).NotNull();
Precondition.For(mapper, nameof(mapper)).NotNull();
T @event = mapper.MapToEvent <U, T>(mappingSource);
@event = RaiseEventInternal(@event, null);
return(@event);
}