private static void assertNotNullClasses(@NotNull JvmElementProvider provider, @NotNull List<? extends JvmClass> classes) {
    for (JvmClass jvmClass : classes) {
      LOG.assertTrue(jvmClass != null, "Provider " + provider + "returned null JvmClass");
    }
  }
private static void assertNotNullClasses(@NotNull JvmElementProvider provider, @NotNull List<? extends JvmClass> classes)