Demonstrates a bug in Xcode 6.1.1 when trying to call super within a closure.

CocoaBotsDocument.swift

import Cocoa

class CocoaBotsDocument : NSDocument {

    override func saveToURL(url: NSURL, ofType typeName: String, forSaveOperation saveOperation: NSSaveOperationType, completionHandler: (NSError!) -> Void) {

        performAsynchronousFileAccessUsingBlock() { fileAccessCompletionHandler in
            // I should be able to call:
            super.saveToURL(url, ofType: typeName, forSaveOperation: saveOperation) { error in }

            // And this _looks_ like it should work, but doesn't:
            NSDocument.saveToURL(self)(url, ofType: typeName, forSaveOperation: saveOperation) { error in }
        }
    }
}

// There is no sadness like the death of optimism