Method: EXECUTE_AUDIT
Method: REGISTER_NOTIFICATION
Method: GET_NON_AGGREGATED_USAGE_DATA
Method: REGISTER_OPERATION
Method: GET_NUMBER_OF_CALLS
Method: GET_AGR_DATA
Method: CHECK_USAGE_MEASUREMNT
Method: AGGREGATE_COL_DATA
Method: GET_COL_DATA
Method: STORE_DATA
Method: DETERMINE_MET_AGGREGATION
Method: GET_USER_AGENTS
Method: DETERMINE_USAGE_MEASUREMNT
Method: CONVERT
Method: PROVIDE_USAGE_MEASUREMNT
Method: DELETE_DATA
Method: GET_GW_USED_DATA
Method: DETERMINE_AGGREGATION
Method: DETERMINE_GW_USED
Method: COLLECT_DATES