`CIBoxFilter` crashes at runtime when using iOS 13 API

Number:rdar://FB7611004 Date Originated:3 March 2020
Status:Open Resolved:
Product:Core Image API Product Version:
Classification:Application Crash Reproducible:
Trying to use the new iOS 13 API for `CIBoxBlur` results in runtime crash.

Following code: 
let boxBlur = CIFilter.boxBlur()

boxBlur.radius = 5
boxBlur.inputImage = ciImage

crashes at runtime with a `NSInvalidArgumentException`,  `-[CIBoxBlur setInputImage:]: unrecognized selector sent to instance 0x116bcb550’`.

According to https://developer.apple.com/documentation/coreimage/ciboxblur, that’s a property that `CIBoxBlur` has (or should have).

Tested on iPhone 11 Pro Max / iOS 13.3.1, and iOS 13.3 Simulator bundled with Xcode 11.3.1  (11C505).


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