@Override
  public String getIdentifier() {
    return counter.getPrometheusName();
  }
A Prometheus counter implementation for Besu metrics. This class provides a Prometheus counter
where the actual value is kept internally by the collector and methods are provided to increase
the value when needed.
metrics/core/src/main/java/org/hyperledger/besu/metrics/prometheus/PrometheusCounter.java