The value of this property is dynamically determined based on how many layers you’ve added to the descriptor. To add a new layer, call setLayer(_:at:) or use the subscripting operator to assign a layer.
Descriptions for the rasterization rates to apply to the set of layers in a rate map.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.