protected void updater(final ObservableDoubleMeasurement measurement) {
    observationsMap.forEach(
        (labels, valueSupplier) -> measurement.record(valueSupplier.getAsDouble(), labels));
  }
Callback to record the supplied values

@param measurement where to record the values
metrics/core/src/main/java/org/hyperledger/besu/metrics/opentelemetry/OpenTelemetryLabelledSuppliedMetric.java