private string get_next_key(global::System.IntPtr swigiterator)
        {
            string ret = FiftyOneDegreesPatternV3PINVOKE.MapStringString_get_next_key(swigCPtr, swigiterator);

            if (FiftyOneDegreesPatternV3PINVOKE.SWIGPendingException.Pending)
            {
                throw FiftyOneDegreesPatternV3PINVOKE.SWIGPendingException.Retrieve();
            }
            return(ret);
        }