return;
            }
            final HttpSession ssn = request.getSession();
            ssn.setAttribute("NtlmHttpAuth", ntlm);
            ssn.setAttribute("ntlmdomain", ntlm.getDomain());
            ssn.setAttribute("ntlmuser", ntlm.getUsername());
        } else {
            final HttpSession ssn = request.getSession(false);

            throwValidationError(messages -> {
                messages.addErrorsLoginError(GLOBAL);
            }, validationErrorLambda);
        });
    }

    private OptionalThing<HttpSession> getSession() {
        final HttpSession session = request.getSession(false);
        if (session != null) {
            return OptionalEntity.of(session);
        }
        return OptionalEntity.empty();
    }

                return;
            }
            final HttpSession ssn = request.getSession();
            ssn.setAttribute("NtlmHttpAuth", ntlm);
            ssn.setAttribute("ntlmdomain", ntlm.getUserDomain());
            ssn.setAttribute("ntlmuser", ntlm.getUsername());
        } else {
            final HttpSession ssn = request.getSession(false);