ValueProxy inheritance trouble, always load properties

Hi there, 

This seems to be a GWT 2.5 issue. 

I have two ValueProxy: Data and DataDetail, DataDetail extends Data, both are proxy for backend entity DataEntity.  DataDetail has more properties than Data does. The reason I have two proxy for one single entity is because I want to load a list of Data objects first and then for a given Data object, load all its details as DataDetail.   This is how I implement loading-details-on-demand so that I do not load too much data in the beginning. 

List<Data>  getAllObjects();                 <=== load only minimum set of data for all objects

DataDetail   getObjectDetail(id);            <=== load as much as I can for one object

If I have DataDetail extending Data, then GWT is always loading all properties in DataDetail (even for getAllObjects() call), because ProxyAutoBean is loading properties defined in DataDetail, even though the interface is only using Data value proxy. 

But if I have DataDetail duplicate properties in Data (thus I do not need DataDetail extends Data), then everything works as expected. 

Is this a GWT bug?

Thanks,

yan

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