XmppHeaderMapper.AbstractXmppConnectionAwareEndpoint.AbstractXmppConnectionAwareMessageHandlerMessages when a
particular Presence event occurs within the logged-in user's Roster.XMPPConnection object.XmppConnectionFactoryBean.setConnectionConfiguration(ConnectionConfiguration)
to avoid BeanCurrentlyInCreationException
during AbstractAutowireCapableBeanFactory.getSingletonFactoryBeanForTypeCheck()HeaderMapper
but parameterized with the Smack API Message.Message objects
that handle XMPP events.