Is your feature request related to a problem? Please describe.
YaHT is an addon that adds a castbar to aimed shot and multishot hunters spells.
Dominos cast isn't catching up those casts from default UI

Describe the solution you'd like
Dominos catch those event and display both cast in it's own castbar

Additional context
YaHT had this implemented on 1.12 because dominos wasn't maintained anymore.
Here is a link to the thread on YaHT repository, including a link that may help.
Aviana/YaHT#35 (comment)

This addon also does the same job of detecting hunters casts if that helps : https://www.curseforge.com/wow/addons/aimedshotcastbarclassic

Is there a way for non dominos addons to trigger a dominos cast ?