boolean (@NotNull PsiDirectory psiDirectory, @NotNull Collection<PsiClass> classes) { List<PsiClass> javaClassesInDir = new SmartList<>(); for (PsiFile file : psiDirectory.getFiles()) { PsiJavaFile javaFile = ObjectUtils.tryCast(file, PsiJavaFile.class); if (javaFile == null) continue; for (PsiClass psiClass : javaFile.getClasses()) { if (classVisibleToOtherModules(psiClass)) { javaClassesInDir.add(psiClass); } } } javaClassesInDir.removeAll(new SmartHashSet<>(classes)); return javaClassesInDir.isEmpty(); }