* this factory function and are immutable once set. Optional fields
* have explicit setter functions, but again values may only be set
* once so that the event has immutable properties.
- * @param event_name Unique Event Name confirming Domain AsdcModel Description
- * @param event_id A universal identifier of the event for: troubleshooting correlation, analysis, etc
- * @param vendor_id The vendor id to encode in the event instance id.
- * @param event_id The vendor event id to encode in the event instance id.
+ * @param ev_name Unique Event Name confirming Domain AsdcModel Description
+ * @param ev_id A universal identifier of the event for: troubleshooting correlation, analysis, etc
+ * @param interval heartbeat interval
* @returns pointer to the newly manufactured ::EVENT_HEARTBEAT_FIELD. If the event
* is not used (i.e. posted) it must be released using
* ::evel_free_hrtbt_field.