contentAccessDateKey
The time at which the resource was most recently accessed.
Declaration
static let contentAccessDateKey: URLResourceKeyDiscussion
This key corresponds to an NSDate value, or nil if the volume doesn’t support access dates.
When you set the contentAccessDateKey for a resource, also set contentModificationDateKey in the same call to the setResourceValues(_:) method. Otherwise, the file system may set the contentAccessDateKey value to the current contentModificationDateKey value.