public <T> Gauge<T> getGauge(final Gauge<T> gauge, final String name) {
        if (contains(name))
            return getRegistry().getGauges((s, metric) -> s.equals(name)).values().stream().findFirst().get();
        else
            return getRegistry().register(name, gauge);
    }
Remove all reporters previously configured through the {@code add*} methods on this class.
gremlin-server/src/main/java/org/apache/tinkerpop/gremlin/server/util/MetricManager.java