XCTPerformanceMetric Performance metrics that the test records. Declarationstruct XCTPerformanceMetric TopicsMeasuring Elapsed TimewallClockTimeInitializing an Iteminit(_:)init(rawValue:) RelationshipsConforms ToEquatableHashableRawRepresentableSendableSendableMetatype See AlsoMeasuring Performancemeasure(_:)measureMetrics(_:automaticallyStartMeasuring:for:)measure(metrics:block:)measure(metrics:options:block:)measure(options:block:)startMeasuring()stopMeasuring()defaultPerformanceMetricsdefaultMetricsdefaultMeasureOptions