flags.StringVar(&beginStr, "begin", "", fmt.Sprintf("timestamp `begin` for date range operation (format: %s)", timestampFormat))
flags.StringVar(&endStr, "end", "", fmt.Sprintf("timestamp `end` for date range operation (format: %s)", timestampFormat))
flags.BoolVar(&c.cache, "cache", true, "create and use a local disk cache of Arvados objects")
flags.StringVar(&beginStr, "begin", "", fmt.Sprintf("timestamp `begin` for date range operation (format: %s)", timestampFormat))
flags.StringVar(&endStr, "end", "", fmt.Sprintf("timestamp `end` for date range operation (format: %s)", timestampFormat))
flags.BoolVar(&c.cache, "cache", true, "create and use a local disk cache of Arvados objects")