@SuppressWarnings("unchecked")
	public Set<ActivityContextHandle> getActivityContextHandles() {
		final Node node = getNode();
		return node != null ? node.getChildrenNames() : Collections.emptySet();
	}
@SuppressWarnings("unchecked")
	public Set<ActivityContextHandle> getActivityContextHandles() {
		final Node node = getNode();
		return node != null ? node.getChildrenNames() : Collections.emptySet();
	}
@ SuppressWarnings ( "unchecked" ) public Set < ActivityContextHandle > getActivityContextHandles ( ) { final Node node = getNode ( ) ; return node != null ? node . getChildrenNames ( ) : Collections . emptySet ( ) ; }
Retrieves a set containing all activity context handles in the factory's
cache data

@return
Retrieves a set containing all activity context handles in the factory s cache data