Test:
	'ComplexTest' name=ID
;

TestRef:
	'Testref' name=ID 'references' ref=[Test]
;

ComplexTest basicParamTest

Testref myref references basicParamTest

public class MyEditorConfiguration extends org.eclipse.xtext.gmf.glue.PopupEditorConfiguration implements IPopupEditorConfiguration {
	
	// standard stuff skipped

	@Override
	public IPopupEditorHelper createPopupEditorHelper(Object editPart) {
		System.out.println("createPopupEditorHelper!!!!!");

		IGraphicalEditPart graphicalEditPart = null;
		if(!(editPart instanceof IGraphicalEditPart)) {
			return null;
		}
		graphicalEditPart = (IGraphicalEditPart)editPart;
		if(!(graphicalEditPart.getTopGraphicEditPart().resolveSemanticElement() instanceof Comment)) {
			return null;
		}
		
		content = (Content)graphicalEditPart.getTopGraphicEditPart().resolveSemanticElement();

		Injector injector = org.example.ParameterActivator.getInstance().getInjector("org.example.Parameter"); 

		String textToEdit = "" + this.getTextToEdit(content);
		String fileExtension = "" + ".mydsl";
				
		IXtextEMFReconciler reconciler = new IXtextEMFReconciler() {
			@Override
			public void reconcile(EObject modelObject, EObject xtextObject) {
				// ... apply changes from popup editor ...
			}
			
		};		
		return super.createPopupEditorHelper(graphicalEditPart, injector, reconciler, textToEdit, fileExtension, new DefaultXtextSemanticValidator());
	}

}