I have done everything in https://learn.microsoft.com/en-us/xamarin/ios/platform/binding-swift/walkthrough till the step where I need to generate API definition file for the binding. I have used the correct sdk version and my command is "sharpie bind -framework ./Desktop/Keyless/sdk-ios-master/CoreMoboKey.framework -sdk iphoneos14.2". However it still show error like "function does not return NSString", "Could not build module 'Foundation'"