ssn.getSmbTree(LOGON_SHARE, null).treeConnect(null, null);
        }
        return new NtlmChallenge(trans.server.encryptionKey, dc);
    }

    /**
     * Retrieves an NTLM challenge from a domain controller for the configured domain.
     *
     * @return the NTLM challenge from the domain controller
     * @throws SmbException if an SMB error occurs

  }

  private Entry<K, V>[] getEntriesMultipleNullKeys() {
    Entry<K, V>[] entries = createArrayWithNullKey();
    entries[0] = entry(null, entries[0].getValue());
    return entries;
  }

  private Entry<K, V>[] getEntriesMultipleNonNullKeys() {
    Entry<K, V>[] entries = createSamplesArray();
    entries[0] = entry(k1(), v0());
    return entries;
  }

After Prometheus is configured, you can use Grafana to visualize MinIO metrics. Refer the [document here to setup Grafana with MinIO prometheus metrics](https://github.com/minio/minio/blob/master/docs/metrics/prometheus/grafana/README.md).

## List of metrics exposed by MinIO

- MinIO exports Prometheus compatible data by default as an authorized endpoint at `/minio/v2/metrics/cluster`. 

![Grafana](https://raw.githubusercontent.com/minio/minio/master/docs/metrics/prometheus/grafana/replication/grafana-replication-node.png)

    return populate(new HashMap<String, String>(), entries);
  }

  // TODO: call conversion constructors or factory methods instead of using
  // populate() on an empty map
  @CanIgnoreReturnValue
  private static <T, M extends Map<T, String>> M populate(M map, Entry<T, String>[] entries) {
    for (Entry<T, String> entry : entries) {
      map.put(entry.getKey(), entry.getValue());

    return populate(new HashMap<String, String>(), entries);
  }

  // TODO: call conversion constructors or factory methods instead of using
  // populate() on an empty map
  @CanIgnoreReturnValue
  private static <T, M extends Map<T, String>> M populate(M map, Entry<T, String>[] entries) {
    for (Entry<T, String> entry : entries) {
      map.put(entry.getKey(), entry.getValue());

import org.opensearch.search.aggregations.metrics.PercentilesAggregationBuilder;
import org.opensearch.search.aggregations.metrics.ScriptedMetricAggregationBuilder;
import org.opensearch.search.aggregations.metrics.StatsAggregationBuilder;
import org.opensearch.search.aggregations.metrics.SumAggregationBuilder;
import org.opensearch.search.aggregations.metrics.TopHitsAggregationBuilder;
import org.opensearch.search.aggregations.metrics.ValueCountAggregationBuilder;

    private static class MapN<K, V> extends AbstractImmutableMap<K, V> {
        private final Object[] entries;

        private MapN(Map<K, V> map) {
            if (map != null) {
                entries = new Object[map.size()];
                int idx = 0;
                for (Entry<K, V> e : map.entrySet()) {
                    entries[idx++] = new SimpleImmutableEntry<>(e.getKey(), e.getValue());
                }
            } else {

    super(delegate);
  }

  RegularImmutableMap(Entry<? extends K, ? extends V>... entries) {
    this(/* throwIfDuplicateKeys= */ true, entries);
  }

  RegularImmutableMap(boolean throwIfDuplicateKeys, Entry<? extends K, ? extends V>[] entries) {
    super(throwIfDuplicateKeys, entries);
  }

  /**
   * Resizes the internal entries array to the specified capacity, which may be greater or less than
   * the current capacity.
   */
  void resizeEntries(int newCapacity) {
    this.keys = Arrays.copyOf(keys, newCapacity);
    this.values = Arrays.copyOf(values, newCapacity);
    long[] entries = this.entries;
    int oldCapacity = entries.length;
    entries = Arrays.copyOf(entries, newCapacity);