public string SendBill(string invoiceId)
{
var invoice = _repository.GetInvoice(invoiceId);
var fileName = "20100066603-01-F001-1";
var envelope = _repository.GetEnvelope(GetEnvelopeOptions(fileName));
var request = _requestManager.CreateWebRequest(GetRequestOptions());
string soapStr = _serializer.Serialize(envelope, null, NameSpaces.GetEnvelopeNamespaces(), true);
string invoiceStr = _serializer.Serialize(invoice, NameSpaces.DEFAULT, NameSpaces.GetInvoiceNamespaces());
var zippedBytes = _zipper.Zip(fileName, invoiceStr);
var soapBuilderRequest = GetSoapBuilderRequest(request, soapStr, zippedBytes, fileName);
//updates the web request with encoding, soap header, file content.
_soapBuilder.Build(soapBuilderRequest);
return(_client.SendBill(request));
}