-
-extern struct Metadata *channel_metadata_add(struct Channel *target, const char *name, const char *value, int propegate);
-extern struct Metadata *channel_metadata_time_add(struct Channel *target, const char *name, time_t value);
-extern void channel_metadata_delete(struct Channel *target, const char *name, int propegate);
-extern struct Metadata *channel_metadata_find(struct Channel *target, const char *name);