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This is an idea on how we might try to test these features, but
there's quite a bit of work to go -- these aren't connected yet.

Making the 'newNb' functions for the runtime/wrapper-based typed.Node
implementations will be easy enough.  Making them connect for the
codegenerated stuff might need more interesting glue, and I'm still not
entirely sure how to go about making good tests for something that
involves running the compiler more than once.
Signed-off-by: Eric Myhre <hash@exultant.us>