to be done...
Do NOT run '$make code'.
This would trigger zproject's generation of the following line using zproto's c codec.
Becuase of cffi python bindings, we have
- 'api/zm_proto.api' that generates include/zm_proto.h header file
- corresponding c file 'src/zm_proto.c' is generated using zproto's C codec
- zm_proto_utils.(h|c), generated by zproject's CLASS element, that contain all the missing functions in include/zm_proto.h to which we are used to if the file was generated by zproto's C coded.