LoanRequestSender.cs

public class LoanRequestSenderFilter :
        ILoanRequestSenderFilter
{     
    public async Task SendLoanRequestToRegisteredBanks(
        LoanQuoteRequest loanQuoteRequest)
    {
        var allRegisteredBanks = RegisteredBanks.All();

        foreach (var bank in allRegisteredBanks)
        {            
            // perform the bank API call            
        }
    }
}