MRClass/Assets/Scripts/Core/UI/TimelineUI/TimeLineCurve/CurveControlClip.cs

using System;
using UnityEngine;
using UnityEngine.Playables;
using UnityEngine.Timeline;

[Serializable]
public class CurveControlClip : PlayableAsset, ITimelineClipAsset
{

    public CurveControlBehaviour template = new CurveControlBehaviour();
    public TimelineClip clipPassthrough = null;
    public ClipCaps clipCaps
    {
        get { return ClipCaps.Blending; }
    }

    public override Playable CreatePlayable(PlayableGraph graph, GameObject owner)
    {
        template.Clip = clipPassthrough;
        var playable = ScriptPlayable<CurveControlBehaviour>.Create(graph, template);
        return playable;
    }
}