MESSAGE_DEF(SGW_CREATE_SESSION_REQUEST,  MESSAGE_PRIORITY_MED, SgwCreateSessionRequest,  sgwCreateSessionRequest)
MESSAGE_DEF(SGW_CREATE_SESSION_RESPONSE, MESSAGE_PRIORITY_MED, SgwCreateSessionResponse, sgwCreateSessionResponse)
MESSAGE_DEF(SGW_MODIFY_BEARER_REQUEST,   MESSAGE_PRIORITY_MED, SgwModifyBearerRequest,   sgwModifyBearerRequest)
MESSAGE_DEF(SGW_MODIFY_BEARER_RESPONSE,  MESSAGE_PRIORITY_MED, SgwModifyBearerResponse,  sgwModifyBearerResponse)
MESSAGE_DEF(SGW_DELETE_SESSION_REQUEST,  MESSAGE_PRIORITY_MED, SgwDeleteSessionRequest,  sgwDeleteSessionRequest)
MESSAGE_DEF(SGW_DELETE_SESSION_RESPONSE, MESSAGE_PRIORITY_MED, SgwDeleteSessionResponse, sgwDeleteSessionResponse)