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Extending Protocol Buffers in Java



I'm having trouble accessing extended protocol buffer members. Here is the scenario:





Message Foo { optional int i = 1; }





message Bar { extend Foo { optional int j = 10001; } }





I don't have the Bar message within any of my other protos. How can I get Bar.j in Java? All examples I've found require a Bar within a message.





Thanks!


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