.",         "SampleAfterValue": "0000000",         "UMask": "0x00"     },     {         "BriefDescription": "Retired Instructions who experienced Instruction L0 Cache true miss.",         "Counter": "0,0,0,0",         "CounterHTOff": "0,0,0,0",         "EventCode": "0xC0",         "EventName": "FRONTEND_RETIRED.L0