// Iterator for Handles
Iterator<ClusterElement> handleClusterIter = handleClusterSetIter.next().iterator();
while (handleClusterIter.hasNext()){
// get current FlowNode element
ClusterElement element = handleClusterIter.next();
// refer from current FlowNode element to its parent PetriNet element
// if the actual element cannot be found in the current focus window
AbstractPetriNetElementModel highlightElement = element.m_element;
AbstractPetriNetElementModel owningElement = null;
if ((!mediatorReference.getUIReference().getEditorFocus().getModelProcessor().getElementContainer().containsElement(element.m_element.getId())&&