public async ICovariantAwaitable <CommandDispatchResult> HandleAsync(DispatchCommand message)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
Console.WriteLine($"Received 'DispatchCommand' for command type '{message.CommandType.FullName}' with command '{message.Command}'.");
var answer = new CommandDispatchResult(await _commandDispatcher.DispatchAsync(message.CommandType, message.Command));
return(answer);
}