AggregatedUnincludedSegment: StorageDescriptor<[], {
    consumed_go_ahead_signal?: Types.UpgradeGoAhead;
    hrmp_watermark?: number;
    used_bandwidth: {
        hrmp_outgoing: [number, {
            msg_count: number;
            total_bytes: number;
        }][];
        ump_msg_count: number;
        ump_total_bytes: number;
    };
}, true, never>

Storage field that keeps track of bandwidth used by the unincluded segment along with the latest HRMP watermark. Used for limiting the acceptance of new blocks with respect to relay chain constraints.