Retrieve randomly generated child ID from Firebase

Question

I have Firebase generating random keys for my records in a Swift app. How do I go about retrieving that key if I want to change a specific record? In my example below, I\'m mark

Answer 1

Following Tim's answer for Swift 3 and Firebase 4 I had to use the below

for task in snapshot.children {
            guard let taskSnapshot = task as? DataSnapshot else {
                continue
            }

            let id = taskSnapshot.key