@Override
FunctionTimer newNoopMeter() {
    return new NoopFunctionTimer(getId());
}
 

public FunctionTimerMetricsConverterTest() {
    super(new NoopFunctionTimer(ID), new FunctionTimerMetricsConverter());
}
 

@Override
protected <T> FunctionTimer newFunctionTimer(final Meter.Id id, final T obj, final ToLongFunction<T> countFunction, final ToDoubleFunction<T> totalTimeFunction, final TimeUnit totalTimeFunctionUnits) {
    return new NoopFunctionTimer(id);
}
 

@Override
protected <T> FunctionTimer newFunctionTimer(Id id, T obj, ToLongFunction<T> countFunction,
                                             ToDoubleFunction<T> totalTimeFunction,
                                             TimeUnit totalTimeFunctionUnits) {
    return new NoopFunctionTimer(id);
}
 

/**
 * A timer that tracks monotonically increasing functions for count and totalTime.
 *
 * @param id                    The identifier for this function timer.
 * @param obj                   State object used to compute a value.
 * @param countFunction         Function that produces a monotonically increasing counter value from the state object.
 * @param totalTimeFunction     Function that produces a monotonically increasing total time value from the state object.
 * @param totalTimeFunctionUnit The base unit of time produced by the total time function.
 * @param <T>                   The type of the state object from which the function values are extracted.F
 * @return A new or existing function timer.
 */
<T> FunctionTimer timer(Meter.Id id, T obj,
                        ToLongFunction<T> countFunction,
                        ToDoubleFunction<T> totalTimeFunction,
                        TimeUnit totalTimeFunctionUnit) {
    return registerMeterIfNecessary(FunctionTimer.class, id, id2 -> {
        Meter.Id withUnit = id2.withBaseUnit(getBaseTimeUnitStr());
        return newFunctionTimer(withUnit, obj, countFunction, totalTimeFunction, totalTimeFunctionUnit);
    }, NoopFunctionTimer::new);
}