Static kCIImageProviderUserInfo 

pub unsafe static kCIImageProviderUserInfo: &'static CIImageOption

Available on crate features CIImage and CIImageProvider only.

A key for any data needed by the image provider object. The associated value is an object that contains the needed data.

This key and its value may be passed to:

• /CIImage/imageWithImageProvider:size::format:colorSpace:options:
• /CIImage/initWithImageProvider:size::format:colorSpace:options:

The value object is retained until the image is deallocated.

See also Apple’s documentation