public static PropertyClusterEventTask createDeleteTask(String key) {
        PropertyClusterEventTask task = new PropertyClusterEventTask();
        task.event = Type.deleted;
        task.key = key;
        return task;
    }
This task updates or deletes a property in a cluster node's property map.
{@link PropertyEventListener} of each cluster node will be alerted of the event.

@author Gaston Dombiak
xmppserver/src/main/java/org/jivesoftware/util/PropertyClusterEventTask.java