UIImage factory method nullability does not match API reference

Originator:patrick.hartling
Number:rdar://21765780 Date Originated:10-Jul-2015
Status:Open Resolved:
Product:iOS SDK Product Version:9.0 Beta 3
Classification: Reproducible:
 
Summary:
There are two factory methods in the UIImage class interface in the iOS 9.0 Beta 3 SDK where the return type is nonnull UIImage *, but the API reference says that nil can be returned. They are as follows:

 * +imageWithCGImage:
 * +imageWithCGImage:scale:orientation:

Steps to Reproduce:
Use ⌥-click to display the reference information for the identified methods.

Expected Results:
My assumption is that the API reference is correct and that these methods should be updated to indicate that a nullable UIImage * is returned.

Actual Results:
If I pass in a NULL CGImageRef to either of the two factory methods, the result is nil. I do not know what other circumstances will cause nil to be returned.

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