We then wrote a trivial `gobServerCodec` wrapper to reproduce the original functionality. From there it is simple to build a `jsonServerCodec`.

In an inheritance-oriented language like Java or C++, the obvious path would be to generalize the RPC class, and create JsonRPC and GobRPC subclasses. However, this approach becomes tricky if you want to make a further generalization orthogonal to that hierarchy. (For example, if you were to implement an alternate RPC standard). In our Go package, we took a route that is both conceptually simpler and requires less code be written or changed.