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;

  // If the `next` bits in `entries[i]` are 0 that means there are no further entries for the given
  // short hash. But 0 is also a valid index in `entries`, so we add 1 to these indices before
  // putting them in `table` or in `next` bits, and subtract 1 again when we need an index value.
  //
  // The elements of `keys`, `values`, and `entries` are added sequentially, so that elements 0 to

type readDirOpts struct {
	// The maximum number of entries to return
	count int
	// Follow directory symlink
	followDirSymlink bool
}

// Return all the entries at the directory dirPath.
func readDir(dirPath string) (entries []string, err error) {
	return readDirWithOpts(dirPath, readDirOpts{count: -1})
}

// Return up to count entries at the directory dirPath.

          entryIndex = next - 1;
          entry = entries[entryIndex];
          next = CompactHashing.getNext(entry, mask);
        } while (next != srcNext);
        // here, entries[entryIndex] points to the old entry location; update it
        entries[entryIndex] = CompactHashing.maskCombine(entry, dstIndex + 1, mask);
      }
    } else {
      elements[dstIndex] = null;
      entries[dstIndex] = 0;
    }
  }

    sort(entries, sortedMultiset.comparator());

    // some tests assume SEVERAL == 3
    if (entries.size() >= 1) {
      a = Multisets.immutableEntry(entries.get(0), sortedMultiset.count(entries.get(0)));
      if (entries.size() >= 3) {
        b = Multisets.immutableEntry(entries.get(1), sortedMultiset.count(entries.get(1)));
        c = Multisets.immutableEntry(entries.get(2), sortedMultiset.count(entries.get(2)));
      }
    }

SequencedCollection<String> reversed = CollectionsUtil.reversed(sequenced);

// Specialized collections
LruHashMap<String, Object> lruCache = new LruHashMap<>(100); // LRU cache with max 100 entries
CaseInsensitiveMap<String> configMap = new CaseInsensitiveMap<>();
```

### Resource Management
```java
import org.codelibs.core.io.*;

// Resource loading and management

                new TestStringMapGenerator() {
                  @Override
                  protected Map<String, String> create(Entry<String, String>[] entries) {
                    Map<String, String> map = CompactLinkedHashMap.create();
                    for (Entry<String, String> entry : entries) {
                      map.put(entry.getKey(), entry.getValue());
                    }
                    return map;
                  }

        builder.put(entry.getKey(), entry.getValue());
      }
      return ImmutableMap.copyOf(builder);
    }
  }

  public static class ImmutableMapCopyOfEntriesGenerator extends TestStringMapGenerator {
    @Override
    protected Map<String, String> create(Entry<String, String>[] entries) {
      return ImmutableMap.copyOf(asList(entries));
    }
  }

  public static class ImmutableMapUnhashableValuesGenerator

     * the previously configured separator and key-value separator.
     *
     * @since 10.0
     */
    public String join(Iterable<? extends Entry<?, ?>> entries) {
      return join(entries.iterator());
    }

    /**
     * Returns a string containing the string representation of each entry in {@code entries}, using

      public ImmutableBiMap<Object, Object> create(List<Entry<?, ?>> entries) {
        return ImmutableBiMap.copyOf(entries);
      }
    },
    BUILDER_PUT_ONE_BY_ONE {
      @Override
      public ImmutableBiMap<Object, Object> create(List<Entry<?, ?>> entries) {
        ImmutableBiMap.Builder<Object, Object> builder = ImmutableBiMap.builder();
        for (Entry<?, ?> entry : entries) {
          builder.put(entry.getKey(), entry.getValue());