I have an array with ObjectIds:
var subjId:PFObject = [<Subjects: 0x16dy39c0, objectId: kmlgYQr4Qe, localId: (null)> {
}, <Subjects: 0x16de3df0, objectId: eYnor2QjLt, localId: (null)> {
}]
And I want to retrieve those objects, I've been looking around and I found that its done by FetchAllInBackground. My question is: How do you use FetchAllInBackground in Swift? I've looked around and I haven't found any documentation.