bytes: lambda o: o.decode(),
    Color: str,
    datetime.date: isoformat,
    datetime.datetime: isoformat,
    datetime.time: isoformat,
    datetime.timedelta: lambda td: td.total_seconds(),
    Decimal: decimal_encoder,
    Enum: lambda o: o.value,
    frozenset: list,
    deque: list,
    GeneratorType: list,
    IPv4Address: str,
    IPv4Interface: str,
    IPv4Network: str,

		beforeProfile := loadProfile(t)
		beforeMetrics := []metrics.Sample{{Name: "/sync/mutex/wait/total:seconds"}}
		metrics.Read(beforeMetrics)

		fn()

		afterProfile := loadProfile(t)
		afterMetrics := []metrics.Sample{{Name: "/sync/mutex/wait/total:seconds"}}
		metrics.Read(afterMetrics)

		sumSamples := func(p *profile.Profile, i int) int64 {
			var sum int64

		Kind:        KindFloat64Histogram,
		Cumulative:  true,
	},
	{
		Name:        "/sync/mutex/wait/total:seconds",

			},
		},
		"/sched/pauses/total/other:seconds": {
			compute: func(_ *statAggregate, out *metricValue) {
				sched.stwTotalTimeOther.write(out)
			},
		},
		"/sync/mutex/wait/total:seconds": {
			compute: func(_ *statAggregate, out *metricValue) {
				out.kind = metricKindFloat64
				out.scalar = float64bits(nsToSec(totalMutexWaitTimeNanos()))
			},
		},
	}

		is spent getting all threads to stop (measured directly in
		/sched/pauses/stopping/other:seconds). Bucket counts increase
		monotonically.

	/sync/mutex/wait/total:seconds
		Approximate cumulative time goroutines have spent blocked on a
		sync.Mutex, sync.RWMutex, or runtime-internal lock. This metric
		is useful for identifying global changes in lock contention.