Return the float curve that the binding is pointing to.
Внутренне Unity автоматически сочетает местоположения кривых, масштаб кривых, вращения кривых.
Thus transform curves always get combined and their keyframes is always the union of all keyframe points.
In the Editor AnimationClip's let you specify special editor curves which do not get combined, thus it lets the user edit curves in a more intuitive way.
See also: AnimationUtility.GetObjectReferenceCurve.