@Override
        public void propertyDeleted( String property, Map<String, Object> params )
        {
            processPropertyChange( property );
        }
Implementation of an Object pool that manages instances of SMPPSession. The intend of this pool is to have a
single session, that's allowed to be idle for at least two minutes before being closed.

The pool reacts to Openfire property changes, clearing all (inactive) sessions when a property used to create
a session is modified. Note that sessions that are borrowed from the pool are not affected by such a change. When
a property change occurs while a session is borrowed, a warning is logged (the property change will be applied
when that session is eventually rotated out of the pool by the eviction strategy.

@author Guus der Kinderen, guus.der.kinderen@gmail.com
xmppserver/src/main/java/org/jivesoftware/util/SmsService.java