     /**
     Designated initializer.
 
-    :park: operations, an array of `NSOperation`s.
+    - parameter operations: an array of `NSOperation`s.
     */
     public init(operations ops: [NSOperation]) {
         operations = ops

        }
    }

    public func operationQueue(queue: OperationQueue, operationDidFinish operation: NSOperation, withErrors errors: [ErrorType]) {
        aggregateErrors.appendContentsOf(errors)


    /**
    Add an `NSOperation` to the group's queue.
    
    - parameter operation: an `NSOperation` instance.
    */
    public func addOperation(operation: NSOperation) {
        queue.addOperation(operation)
    }

    /**
    Add multiple operations at once.
    
    - parameter operations: an array of `NSOperation` instances.
    */
    public func addOperations(operations: [NSOperation]) {
        queue.addOperations(operations, waitUntilFinished: false)
    }
