private Class<?> generateSerializableImpl() throws ClassNotFoundException {
      ClassGen cg = new ClassGen(CLASS_NAME_SERIALIZABLE_IMPL, Object.class.getName(), GENERATED,
          Constants.ACC_PUBLIC | Constants.ACC_SUPER, new String[] {Serializable.class.getName()});
      cg.addEmptyConstructor(Constants.ACC_PUBLIC);
      JavaClass jClazz = cg.getJavaClass();
      byte[] bytes = jClazz.getBytes();
      return defineClass(jClazz.getClassName(), bytes, 0, bytes.length);
    }
<pre>
public class SerializableImpl implements Serializable {

  public SerializableImpl() {}

}
</pre>
geode-core/src/test/java/org/apache/geode/internal/util/BlobHelperWithThreadContextClassLoaderTest.java