// socketcan_bcm_t& operator<<(socketcan_bcm_t& s, const struct simple_bcm_msg& obj);
// socketcan_bcm_t& operator<<(socketcan_bcm_t& s, const struct canfd_bcm_msg& obj);
}
// socketcan_bcm_t& operator<<(socketcan_bcm_t& s, const struct simple_bcm_msg& obj);
// socketcan_bcm_t& operator<<(socketcan_bcm_t& s, const struct canfd_bcm_msg& obj);
}