/// <summary> Removes a keyframe at a given index. </summary>
/// <param name="keyframe"> </param>
public void DeleteKeyframe(int keyframe)
{
Argument.Check(Check.Range(keyframe, Keyframes));
#if UNITY_EDITOR
Undo.RecordObject(this, "Delete Keyframe");
#endif
Keyframes.RemoveAt(keyframe);
InternalOnChange();
}