Bug 310685 [LinkedResources] The 'File System' import wizard has inconsistent widget selection
Tn the 'File System" import wizard, having the "Create complete folder structure" option button set must cause the "Create virtual folders" to be set as well in the "Advanced" section, since this option creates a partial hierarchy and cannot create only a top level link folder.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardFileSystemResourceImportPage1.java
if (!checkedItems.isEmpty()) {
			List allItems = selectionGroup.getAllListItems();
        	if (checkedItems.size() == allItems.size())
        		return true;
        }
		return false;
    }
    
    /**
     *	Answer a boolean indicating whether self's source specification
     *	widgets currently all contain valid values.
     */
    protected boolean validateSourceGroup() {
        File sourceDirectory = getSourceDirectory();
        if (sourceDirectory == null) {
            setMessage(SOURCE_EMPTY_MESSAGE);
            enableButtonGroup(false);
            return false;
        }
        if (sourceConflictsWithDestination(new Path(sourceDirectory.getPath()))) {
        	setMessage(null);
            setErrorMessage(getSourceConflictMessage());
            enableButtonGroup(false);
            return false;
        }
        List resourcesToExport = selectionGroup.getAllWhiteCheckedItems();
        if (resourcesToExport.size() == 0){
        	setMessage(null);
        	setErrorMessage(DataTransferMessages.FileImport_noneSelected);
        	return false;