code: public static void removeOffScopeInstances( Instance scopedInstance ) {
  
  		List<Instance> todo = new ArrayList<> ();
  		todo.addAll( scopedInstance.getChildren());
  
  		while( ! todo.isEmpty()) {
  			Instance current = todo.remove( 0 );
  			if( isTarget( current ))
  				current.getParent().getChildren().remove( current );
  			else
  				todo.addAll( current.getChildren());
  		}
  	}
docs: Removes children instances which are off-scope.
  <p>
  Agents manage all the instances under their scoped instance, except those
  that are associated with the "target" installer. Such instances are indeed managed by another agent.
  </p>
  
  @param scopedInstance a scoped instance