Will my app get rejected for using CATRANSITION pageCurl?

Hello was just wondering if my app will get rejected using the following code:

[animation setDuration:1.0];
    [animation setTimingFunction:UIView开发者_开发知识库AnimationCurveEaseInOut];
    animation.type = @"pageUnCurl";
    animation.fillMode = kCAFillModeForwards;
    animation.startProgress = 0.78;
    animation.endProgress = 1.

0;

This is using the undocumented page curl function.

Thanks.

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if the function is not documented by Apple, it will...