+extern void guestfs___warning (guestfs_h *g, const char *fs, ...)
+ __attribute__((format (printf,2,3)));
+extern void guestfs___debug (guestfs_h *g, const char *fs, ...)
+ __attribute__((format (printf,2,3)));
+extern void guestfs___trace (guestfs_h *g, const char *fs, ...)
+ __attribute__((format (printf,2,3)));