char *get_explain_doc(ODR odr, const char *name, const char *db,
int *len);
const char *get_explain_name(const char *db, const char **backend_db);
char *get_explain_doc(ODR odr, const char *name, const char *db,
int *len);
const char *get_explain_name(const char *db, const char **backend_db);