docs: protected void login(final Request request, final Response response)
      {
          // Login detected
          final Form form = new Form(request.getEntity());
          final Parameter identifier = form.getFirst(this.getIdentifierFormName());
          final Parameter secret = form.getFirst(this.getSecretFormName());
          
          // Set credentials
          final ChallengeResponse cr =
                  new ChallengeResponse(this.getScheme(), identifier != null ? identifier.getValue() : null,
                          secret != null ? secret.getValue() : null);
          request.setChallengeResponse(cr);
          
          this.log.info("calling attemptRedirect after login");
          // Attempt to redirect
          this.attemptRedirect(request, response, form);
      }