docs: protected JettyServerNegotiator registerJettyAlpn(final SSLEngine engine, SSLConnectionLink link) {
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
              Tr.debug(tc, "registerJettyAlpn entry " + engine);
          }
          try {
              JettyServerNegotiator negotiator = new JettyServerNegotiator(engine, link);
              // invoke ALPN.put(engine, provider(this))
              Method m = jettyAlpn.getMethod("put", SSLEngine.class, jettyProviderInterface);
              m.invoke(null, new Object[] { engine, java.lang.reflect.Proxy.newProxyInstance(
                                                                                             jettyServerProviderInterface.getClassLoader(),
                                                                                             new java.lang.Class[] { jettyServerProviderInterface },
                                                                                             negotiator) });
              return negotiator;
          } catch (InvocationTargetException ie) {
              if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
                  Tr.debug(tc, "registerJettyAlpn exception: " + ie.getTargetException());
              }
          } catch (Exception e) {
              if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
                  Tr.debug(tc, "registerJettyAlpn jetty-alpn exception: " + e);
              }
          }
          return null;
      }