Smartmobili.Cocoa.NSFileWrapper.AddFileWrapper C# (CSharp) Method

        public virtual NSString AddFileWrapper(NSFileWrapper doc)
        {
            NSString key;

            GSFileWrapperDirectoryTypeCheck();

            key = doc.PreferredFilename();
            if (key == null || key.IsEqualToString(""))
            {
                NSException.Raise("NSInvalidArgumentException", "Adding file wrapper with no preferred filename.");
                return null;
            }

            if (((NSDictionary)_wrapperData).ObjectForKey(key) != null)
            {
                // FIXME - handle duplicate names
            }
            ((NSDictionary)_wrapperData).SetObjectForKey(doc, key);

            return key;
        }