public bool SetOperation(string operation)
        {
            bool ret = OsrPINVOKE.CoordinateTransformationOptions_SetOperation(swigCPtr, operation);

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