private Task <T> Handle <T>(ITransactionHandler handler, BaseTransaction payload, Func <ITransactionHandler, BaseTransaction, Task <T> > handlerAction)
where T : class, new()
{
if (handler == null)
{
_logger.LogWarning($"No handler found");
return(Task.FromResult(new T()));
}
_logger.LogInformation($"Handling {payload.GetType()} with handler {handler.GetType()}");
return(handlerAction(handler, payload));
}