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); }