void () { Set<String> selectedTypes = new LinkedHashSet<>(); selectedTypes.add(JavaUiBundle.message("existing.sources")); for (DetectedRootData rootData : myDetectedRootsChooser.getMarkedElements()) { for (ProjectStructureDetector detector : rootData.getSelectedDetectors()) { selectedTypes.add(detector.getDetectorId()); } } mySequence.setTypes(selectedTypes); myContext.requestWizardButtonsUpdate(); }