@GrpcGlobalClientInterceptor
        CodecValidatingClientInterceptor gcic() {
            return new CodecValidatingClientInterceptor(CODEC);
        }
A test checking that the server and client can start and connect to each other with minimal config and no/the
identity codec.

@author Daniel Theuke (daniel.theuke@heuboe.de)
tests/src/test/java/net/devh/boot/grpc/test/codec/GzipCodecTest.java