counters

type Float64Counter struct {
	Instrument
	sync.Mutex
	metric.Float64Counter
}

type Float64Histogram struct {
	Instrument
	sync.Mutex
	metric.Float64Histogram
}

type Float64UpDownCounter struct {
	Instrument
	sync.Mutex
	metric.Float64UpDownCounter
}

type Instrument interface {
}

type Int64Counter struct {
	Instrument
	sync.Mutex
	metric.Int64Counter
}

type Int64Histogram struct {
	Instrument
	sync.Mutex
	metric.Int64Histogram
}

type Int64UpDownCounter struct {
	Instrument
	sync.Mutex
	metric.Int64UpDownCounter
}