static void onEvent(void *closure, const char *event, struct afb_wsj1_msg *msg);
static void onHangup(void *closure, struct afb_wsj1 *wsj1);
static void onReply(void *closure, struct afb_wsj1_msg *msg);
static void onEvent(void *closure, const char *event, struct afb_wsj1_msg *msg);
static void onHangup(void *closure, struct afb_wsj1 *wsj1);
static void onReply(void *closure, struct afb_wsj1_msg *msg);