I propose to complete the half-hearted try to integrate the binary type into the test suite. We actually have a CrazyNesting struct defined, yet that structure is not used in any call. So we do test the code generation vis-á-vis compileability, but we do not test whether or not the impleemntation actually works.
Test case proposal:
The client sends a binary containing all 256 bytes (in arbitrary order) to the server and checks the returned binary data against the value sent to the server. If they do match exactly, the test counts as passed.