Diff hibernate proxies.

[ptahchiev]

I'm trying to make a diff of two JPA entities and unfortunately some of properties of these JPA entities are hibernate proxies, so I get the following exception:

2017-11-17 14:29:35,672 org.apache.catalina.core.ContainerBase.[Tomcat].[localhost].[/storefront].[dispatcherServlet] [https-jsse-nio-127.0.0.1-8112-exec-7] ERROR: Servlet.service() for servlet [dispatcherServlet] in context with path [/storefront] threw exception [Request processing failed; nested exception is org.springframework.sync.PatchException: Error performing diff:] with root cause
java.lang.IllegalArgumentException: Can not set javassist.util.proxy.MethodHandler field com.nemesis.platform.core.entity.catalog.CatalogVersionEntity_$$_jvst933_2c.handler to com.nemesis.platform.core.entity.catalog.CatalogVersionEntity
	at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)
	at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)
	at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:58)
	at sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFieldAccessorImpl.java:36)
	at java.lang.reflect.Field.get(Field.java:393)
	at org.springframework.sync.Diff.diffNonList(Diff.java:117)
	at org.springframework.sync.Diff.diffNonList(Diff.java:126)
	at org.springframework.sync.Diff.diff(Diff.java:51)
	at com.nemesis.platform.module.restservices.storefront.controller.RestDiffController.synchronize(RestDiffController.java:66)
	at com.nemesis.platform.module.restservices.storefront.controller.RestDiffController$$FastClassBySpringCGLIB$$aa2b6dc9.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
	at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673)
	at com.nemesis.platform.module.restservices.storefront.controller.RestDiffController$$EnhancerBySpringCGLIB$$4092d952.synchronize(<generated>)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)