     /// Unregisters an operation from being mutually exclusive.
     public func removeOperation(operation: Operation, categories: [String]) {
         dispatch_async(serialQueue) {
-            DDLogVerbose("Removing exclusivity categories \(categories) from operation \(operation.dynamicType)")
             for category in categories {
                 self.noqueue_removeOperation(operation, category: category)
             }

*/

import Foundation
import CocoaLumberjack

/**
    `ExclusivityController` is a singleton to keep track of all the in-flight

            until after the operation had already begun, which would be incorrect.
        */
        dispatch_sync(serialQueue) {
            for category in categories {
                self.noqueue_addOperation(operation, category: category)
            }
