interfaceperf_hooks.PerformanceResourceTiminginterface PerformanceResourceTimingreadonly connectEnd: numberreadonly connectStart: numberreadonly decodedBodySize: numberreadonly domainLookupEnd: numberreadonly domainLookupStart: numberreadonly duration: numberreadonly encodedBodySize: numberreadonly entryType: 'resource'readonly fetchStart: numberreadonly initiatorType: stringreadonly name: stringreadonly nextHopProtocol: stringreadonly redirectEnd: numberreadonly redirectStart: numberreadonly requestStart: numberreadonly responseEnd: numberreadonly responseStart: numberreadonly responseStatus: numberreadonly secureConnectionStart: numberreadonly startTime: numberreadonly transferSize: numberreadonly workerStart: numbertoJSON(): any;