hash() and description() not allowed in Xcode 6.3 for NSObject

In my Swift library EVCloudKitDao I do a lot with reflection. Because of that I have set my base class of my data objects to NSObject. Now after the upgrade to Xcode 6.3 I get an error on the 2 functions for getting the hash and the description of the object. The description function was a nice to have, but i do need the hash to make my objects working with a Set.

Here is the code that I have

public class EVCloudKitDataObject : NSObject, NSCoding, Printable, Hashable, Equatable {

    public func hash() -> Int {
        return self.hashValue
    }
    public func description() -> String {
        return EVReflection.description(self)
    }
}

The errors that I get is:

/Users/evermeer/Desktop/dev/GitHub/EVCloudKitDao/AppMessage/AppMessage/CloudKit/EVCloudKitDataObject.swift:106:17: Method 'hash()' with Objective-C selector 'hash' conflicts with getter for 'hash' from superclass 'NSObject' with the same Objective-C selector

/Users/evermeer/Desktop/dev/GitHub/EVCloudKitDao/AppMessage/AppMessage/CloudKit/EVCloudKitDataObject.swift:86:17: Method 'description()' with Objective-C selector 'description' conflicts with getter for 'description' from superclass 'NSObject' with the same Objective-C selector

Does anyone know how I could solve this? You can not use override.