final Shell shell = HandlerUtil.getActiveWorkbenchWindow(event).getShell();
final Project project = ((ProjectSpace) projectSpace).getProject();
Activator.getAccessLayer().invalidateCache(project);
TypeBasedImpactAnalysisWizard wizard = new TypeBasedImpactAnalysisWizard(project, model);
WizardDialog dialog = new WizardDialog(shell, wizard);
dialog.open();
if( wizard.finishedSuccessfully )