UnityEditor.CurveUtility.SetKeyModeFromContext C# (CSharp) Method

        public static void SetKeyModeFromContext(AnimationCurve curve, int keyIndex)
        {
            Keyframe key = curve[keyIndex];
            bool broken = false;
            bool flag2 = false;
            if (keyIndex > 0)
            {
                if (AnimationUtility.GetKeyBroken(curve[keyIndex - 1]))
                {
                    broken = true;
                }
                if (AnimationUtility.GetKeyRightTangentMode(curve[keyIndex - 1]) == AnimationUtility.TangentMode.ClampedAuto)
                {
                    flag2 = true;
                }
            }
            if (keyIndex < (curve.length - 1))
            {
                if (AnimationUtility.GetKeyBroken(curve[keyIndex + 1]))
                {
                    broken = true;
                }
                if (AnimationUtility.GetKeyLeftTangentMode(curve[keyIndex + 1]) == AnimationUtility.TangentMode.ClampedAuto)
                {
                    flag2 = true;
                }
            }
            AnimationUtility.SetKeyBroken(ref key, broken);
            if (broken && !flag2)
            {
                if (keyIndex > 0)
                {
                    AnimationUtility.SetKeyLeftTangentMode(ref key, AnimationUtility.GetKeyRightTangentMode(curve[keyIndex - 1]));
                }
                if (keyIndex < (curve.length - 1))
                {
                    AnimationUtility.SetKeyRightTangentMode(ref key, AnimationUtility.GetKeyLeftTangentMode(curve[keyIndex + 1]));
                }
            }
            else
            {
                AnimationUtility.TangentMode free = AnimationUtility.TangentMode.Free;
                if (((keyIndex == 0) || (AnimationUtility.GetKeyRightTangentMode(curve[keyIndex - 1]) == AnimationUtility.TangentMode.ClampedAuto)) && ((keyIndex == (curve.length - 1)) || (AnimationUtility.GetKeyLeftTangentMode(curve[keyIndex + 1]) == AnimationUtility.TangentMode.ClampedAuto)))
                {
                    free = AnimationUtility.TangentMode.ClampedAuto;
                }
                else if (((keyIndex == 0) || (AnimationUtility.GetKeyRightTangentMode(curve[keyIndex - 1]) == AnimationUtility.TangentMode.Auto)) && ((keyIndex == (curve.length - 1)) || (AnimationUtility.GetKeyLeftTangentMode(curve[keyIndex + 1]) == AnimationUtility.TangentMode.Auto)))
                {
                    free = AnimationUtility.TangentMode.Auto;
                }
                AnimationUtility.SetKeyLeftTangentMode(ref key, free);
                AnimationUtility.SetKeyRightTangentMode(ref key, free);
            }
            curve.MoveKey(keyIndex, key);
        }
    }