Adding Alembic Track to Timeline by script

I want to add alembic track to Timeline by script
it’s somewhat like this in C#

var newTrack = timeline.CreateTrack<AnimationTrack>(null, "Animation Track ");

but that’s Animation track, seems like no alembicTrack type in UnityEngine.Timeline

or I missing something?

nb:I am using Maya 2018.3.7f1 and Alembic package v1.0

Alright I found it, it’s