return new NullableComputable<String>() {
@Nullable
@Override
public String compute() {
dir.accept(new PsiElementVisitor() {
@Override
public void visitFile(final PsiFile file) {
if (file instanceof GherkinFile) {
for (CucumberJvmExtensionPoint extension : extensions) {
extension.getGlues((GherkinFile)file, glues);