 
      */
     public convenience init<G where G: GeneratorType, G.Element == T>(maxCount max: Int? = 5, strategy: WaitStrategy = .Fixed(0.1), _ generator: G, retry: Handler = { ($1, $2) }) {
-        self.init(maxCount: max, delay: GeneratorMap(strategy.generator()) { Delay.By($0) }, generator: generator, retry: retry)
+        self.init(maxCount: max, delay: MapGenerator(strategy.generator()) { Delay.By($0) }, generator: generator, retry: retry)
     }
 
     public override func operationDidFinish(operation: NSOperation, withErrors errors: [ErrorType]) {

     adjust the next delay and Operation.

     */
    public convenience init<D, G where D: GeneratorType, D.Element == Delay, G: GeneratorType, G.Element == T>(maxCount max: Int?, delay: D, generator: G, retry: Handler) {
        let tuple = TupleGenerator(primary: generator, secondary: delay)
        self.init(maxCount: max, generator: anyGenerator(tuple), retry: retry)
    }

    /**

    let retry: RetryGenerator<T>

    /**
     A designated initializer
     
     Creates an operation which will retry executing operations in the face
     of errors.
