如何使用cglib对类进行双重增强?

代码如下:

    Patient patient = factory.createPatient();           

    Enhancer enhancer = new Enhancer();
    enhancer.setSuperclass(patient.getClass());
    enhancer.setCallback(new DefaultMethodInterceptor(patient));
    patient = (Patient) enhancer.create();

    assertThat(patient.getFirstName()).isNotNull();


    Enhancer enhancer2 = new Enhancer();
    enhancer2.setSuperclass(patient.getClass());
    enhancer2.setCallback(new DefaultMethodInterceptor(patient));
    patient = (Patient) enhancer2.create();

    assertThat(patient.getFirstName()).isNotNull();

它在最后一次断言时失败

net.sf.cglib.core.CodeGenerationException: java.lang.reflect.InvocationTargetException-->null
...
Caused by: java.lang.reflect.InvocationTargetException
...
Caused by: java.lang.ClassFormatError: Duplicate method name&signature in class file my/package/entity/Patient$$EnhancerByCGLIB$$ca1e6685$$EnhancerByCGLIB$$f52743be