code: func NewOptions() Options {
  	logger := log.NewLevelLogger(log.SimpleLogger, log.LevelInfo)
  	return &options{
  		logger:         logger,
  		zap:            zap.L(),
  		scope:          tally.NoopScope,
  		samplingRate:   defaultSamplingRate,
  		reportInterval: defaultReportingInterval,
  	}
  }
docs: // NewOptions creates new instrument options.