@CliCommand(value = DISPLAY_GAUGE, help = "Display the value of a gauge")
public String display(
@CliOption(key = { "", "name" }, help = "the name of the gauge to display", mandatory = true, optionContext = "existing-gauge disable-string-converter") String name,
@CliOption(key = "pattern", help = "the pattern used to format the value (see DecimalFormat)", mandatory = false, unspecifiedDefaultValue = NumberFormatConverter.DEFAULT) NumberFormat pattern) {
GaugeResource gauge = gaugeOperations().retrieve(name);
return pattern.format(gauge.getValue());
}