Support recording in PlayableBehaviour template

Hello unity community!
I've implemented my custom playable behaviour using example #4 from this blog post: https://blogs.unity3d.com/2018/09/05/extending-timeline-a-practical-guide/ I created also custom track asset type and mixer for it. Are there any docs or examples on how to support recording mode like it works for animation tract in my custom track? I'd like to configure and preview keys in my custom behaviour via object inspector instead of entering values manually. Thanks in advance!