public Collection<PsiClass> getClasses(@NotNull CharSequence name, @NotNull Project project, @NotNull GlobalSearchScope scope) {
    return StubIndex.getElements(getKey(), name, project, new JavaSourceFilterScope(scope), PsiClass.class);
  }
public Collection<PsiClass> getClasses(@NotNull CharSequence name, @NotNull Project project, @NotNull GlobalSearchScope scope)