The basic image handling class on watchOS.It is Available in watchOS 2.0 and later.
A WKImage object is a wrapper for images you use with a picker interface. The methods of this class let you create your image from any number of image sources.
To create instances of this class, use one of the defined creation methods. Choose the method that best suits the image data you have. After creating the object, you can use associate it with a WKPickerItem object and use it in your picker interface.