- * @iter: trace collection iterator (input)
- * @stream: stream containing event at current position (output)
- * @event: current event (output)
- * Return 0 on success, negative error value on error.
+ * This function allocates and returns a new bt_iter_pos (which must be freed
+ * with bt_iter_free_pos) to be able to restore an iterator position based on a
+ * timestamp.