private boolean returnLoan(Loan loan) throws Exception {
ReturnRequest returnRequest = new ReturnRequest();
returnRequest.setLoan(loan);
String soapRequest = wrapRequest(_ReturnRequest_QNAME, ReturnRequest.class, returnRequest, loan.getId());
String soapResponse = _httpMixIn.postString("http://localhost:" + _port + "/loan/LoanService", soapRequest);
ReturnResponse returnResponse = unwrapResponse(ReturnResponse.class, soapResponse);
return returnResponse.isAcknowledged();
}