Gateway data parsing

Using GXDLMSDirector in Device properties there is a tab named Gateway which has fields for network ID and physical device address and this data are appended to COSEM PDU if the Use Gateway box is selected.
But in GuruxDLMS.c-master project there is not any code for parsing this data. And the two enum items (DLMS_COMMAND_GATEWAY_REQUEST and DLMS_COMMAND_GATEWAY_RESPONSE ) which are defined in enums.h have never been used.
Am I missing something?

BR
saeed