UnityEditor.CurveUtility.HaveKeysInRange C# (CSharp) Method

        public static bool HaveKeysInRange(AnimationCurve curve, float beginTime, float endTime)
        {
            for (int i = curve.length - 1; i >= 0; i--)
            {
                Keyframe keyframe = curve[i];
                if (keyframe.time >= beginTime)
                {
                    Keyframe keyframe2 = curve[i];
                    if (keyframe2.time < endTime)
                    {
                        return true;
                    }
                }
            }
            return false;
        }