google.golang.org/grpc/experimental/stats.UnimplementedMetricsRecorder.RecordInt64Histo (method, view implemented interface methods)

one use

	google.golang.org/grpc/experimental/stats (current package)
		metrics.go#L132: func (UnimplementedMetricsRecorder) RecordInt64Histo(*Int64HistoHandle, int64, ...string) {}