This object reports the type of interval, such as 5-minute or 15-minute, over which this flow policer's performance-monitoring statistics are being collected. Knowing the interval type matters because it tells the admin how to interpret the accompanying counters, such as whether frames-marked-green reflects a short burst window or a full day's traffic. For example, an admin comparing two policers' green/yellow marking ratios would first confirm both report the same cmQosFlowPolicerStatsIntervalType to make sure the comparison is apples-to-apples.