Protocol Experiment​Client

func getVariant(_ flagKey: String, fallback: Variant? = nil) -> Variant? 

func getVariant(_ flagKey: String, fallback: String) -> Variant 

func start(user: ExperimentUser, completion: (() -> Void)?) -> Void

func setUser(user: ExperimentUser, completion: (() -> Void)?) -> Void

func getUser() -> ExperimentUser?

func getUserWithContext() -> ExperimentUser

func getVariant(_ flagKey: String, fallback: Variant?) -> Variant?

func getVariant(_ flagKey: String, fallback: String) -> Variant

func getVariants() -> [String:Variant]

func refetchAll(completion: (() -> Void)?) -> Void

func setContextProvider(_ contextProvider: ContextProvider) -> ExperimentClient