Maintain synchronisation with other States representing the same session by
publishing changes made to ourself and updating ourself according to
notifications published by the other State objects.
Container
Container is Object at front of stack at beginning of call, sets up
threadlocals Interceptors divided into Stateful/less Interceptors
Interceptors implement cloneable
Listen for post-mbean registration and set up the jetty
mbean infrastructure so it can generate mbeans according
to the elements contained in the element
of the jboss-service.xml file.