@Override
  public CompletableFuture<?> stop() {
    metricsSystem.shutdown();
    return CompletableFuture.completedFuture(null);
  }
Instantiates a new Metrics open telemetry push service.

@param metricsSystem The OpenTelemetry metrics system
metrics/core/src/main/java/org/hyperledger/besu/metrics/opentelemetry/MetricsOtelPushService.java