Bug 124569 [projection] expose projection model updater on JavaEditor
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
}
		if ((matches == null || matches.isEmpty()) && (fMarkImplementors || fMarkTypeOccurrences)) {
			ImplementOccurrencesFinder finder= new ImplementOccurrencesFinder();
			String message= finder.initialize(astRoot, selectedNode);
			if (message == null) {
				matches= finder.perform();
				if (!fMarkImplementors && !matches.isEmpty())
					matches.clear();
			}
		}
		if (matches == null) {
			IBinding binding= null;
			if (selectedNode instanceof Name)
				binding= ((Name)selectedNode).resolveBinding();
			if (binding != null && markOccurrencesOfType(binding)) {
				
				OccurrencesFinder finder = new OccurrencesFinder(binding);
				String message= finder.initialize(astRoot, selectedNode);
				if (message == null)
					matches= finder.perform();
			}
		}
		if (matches == null || matches.size() == 0) {
			if (!fStickyOccurrenceAnnotations)
				removeOccurrenceAnnotations();
			return;
		}
		Position[] positions= new Position[matches.size()];
		int i= 0;
		for (Iterator each= matches.iterator(); each.hasNext();) {