go.opentelemetry.io/otel/api/metric/registry.uniqueInstrumentMeterImpl.NewSyncInstrument (method)

one use

	go.opentelemetry.io/otel/api/metric/registry (current package)
		registry.go#L128: func (u *uniqueInstrumentMeterImpl) NewSyncInstrument(descriptor metric.Descriptor) (metric.SyncImpl, error) {