optimized.cs

public async Task SendMoney(SendMoneyRequest req)
{
	var srcAccount = await _accountRepository.LoadAsync(req.SourceAccount);
	var dstAccount = await _accountRepository.LoadAsync(req.DesinationAccount);

	Guard.Null(srcAccount, "Source account must exists");
	Guard.Null(dstAccount, "Destination account must exists");

	var rules = _transferValidationRules.GetAll();
	var state = new TranfserValidationState();
	foreach(var rule in rules)
	{
		await rule.Prepare(req, state);
	}	
	await state.LoadEverything();

	foreach(var rule in rules)
	{
		await rule.Validate(req, state);
	}	

	srcAccount.TransferFunds(dstAccount, req.Amount);
}