anchor.diff:  The below sections refer to single Keycloak _realm_ created in Keycloak server ${version.org.keycloak} for the purpose
   of Fuse 7 Security/Keycloak quickstarts.
   
  -The keycloak server is running using standard distribution with shifed ports:
  +The keycloak server is running using standard distribution with shifted ports:
   [listing,options="nowrap"]
   ----
   $ bin/standalone.sh -Djboss.socket.binding.port-offset=100 --debug 5006
  
positive.code: Now, pax-web-undertow will look for `io.undertow.servlet.ServletExtension` which is now exposed by
  `mvn:org.keycloak/keycloak-pax-web-undertow/${version.org.keycloak}` fragment bundle.
  
  Now, after changing login configuaration in `web.xml` to:
  [source,xml,options="nowrap"]
  ----
  <login-config>
  
negative.code: === OSGi HTTP Service
  
  The _canonical_ way of using servlets in OSGi environment is to use `org.osgi.service.http.HttpService` specified
  in "102 Http Service Specification" in OSGi Enterprise R6 document.
  However it allows to register only `javax.servlet.Servlet` instances and _resources_ (which are effectively
  resource-service servlets).
  
  