REQ_ERROR get_value_uint16(const struct afb_req request, const char *source, uint16_t *out_id);
REQ_ERROR get_value_int16(const struct afb_req request, const char *source, int16_t *out_id);
REQ_ERROR get_value_uint16(const struct afb_req request, const char *source, uint16_t *out_id);
REQ_ERROR get_value_int16(const struct afb_req request, const char *source, int16_t *out_id);