@Override
  public void createGauge(
      final MetricCategory category,
      final String name,
      final String help,
      final DoubleSupplier valueSupplier) {}
Gets operation timer labelled metric.

@param labelCount the label count
@return the operation timer labelled metric
metrics/core/src/main/java/org/hyperledger/besu/metrics/noop/NoOpMetricsSystem.java