supportsDuplex
A Boolean value that indicates whether the printer supports printing on both sides of a sheet of paper.
Declaration
var supportsDuplex: Bool { get }Discussion
The value of this property is true if the printer supports double-sided printing or false if it does not. For printers you create yourself using the init(url:) method, the value of this property is false until you successfully connect to the printer using the contactPrinter(_:) method.