public static PsiClass @NotNull [] getSupers(@NotNull PsiClass aClass, boolean includeSynthetic) {
    return aClass instanceof GrTypeDefinition
           ? ((GrTypeDefinition)aClass).getSupers(includeSynthetic)
           : aClass.getSupers();
  }
public static PsiClass @NotNull [] getSupers(@NotNull PsiClass aClass, boolean includeSynthetic)