println("savedUsernameArray = \(LxKeychain.savedUsernameArray())")
    
LxKeychain.insertOrUpdatePairsOfUsername("username1", password: "password1")
LxKeychain.insertOrUpdatePairsOfUsername("username2", password: "password2")
LxKeychain.insertOrUpdatePairsOfUsername("username3", password: "password3")
LxKeychain.insertOrUpdatePairsOfUsername("username1", password: "password4")
LxKeychain.cleanPasswordForUsername("username2")
LxKeychain.deletePairsByUsername("username3")

println("savedUsernameArray = \(LxKeychain.savedUsernameArray())")

let username1 = "username1"
println("username1 password: \(LxKeychain.passwordForUsername(username1))")

let password1 = "password1"
var judgement = LxKeychain.password(password1, isCorrectToUsername: username1) ? "is" : "is not"
println("username1's password \(judgement) password1")
let password4 = "password4"
judgement = LxKeychain.password(password4, isCorrectToUsername: username1) ? "is" : "is not"
println("username1's password \(judgement) password4")

println("lastestUpdatedUsername = \(LxKeychain.lastestUpdatedUsername())")

let YourSaveKey = "YourSaveKey"
println("Your saved string: \(LxKeychain.fetchDataOfService(YourSaveKey))")
LxKeychain.saveData("Here is What you want to save forever!", forService: YourSaveKey)

println("Your LxKeychain device unique identifer is \(LxKeychain.deviceUniqueIdentifer())")