// ClassPath may contain resources from the boot class loader; just not from the class path.
    for (ResourceInfo resource : classPath.getResources()) {
      assertThat(resource.getResourceName()).doesNotContain("com/google/common/reflect/");
    }
  }

  private static ClassPath.ClassInfo findClass(
      Iterable<ClassPath.ClassInfo> classes, Class<?> cls) {