```go
// hashes the key returning an integer.
func sipHashMod(key string, cardinality int, id [16]byte) int {
        if cardinality <= 0 {
                return -1
        }
        sip := siphash.New(id[:])
        sip.Write([]byte(key))
        return int(sip.Sum64() % uint64(cardinality))
}
```

     */
    @Override
    public Iterator<E> iterator() {
        return map.keySet().iterator();
    }

    /**
     * Returns the number of elements in this set (its cardinality).
     *
     * @return the number of elements in this set (its cardinality).
     */
    @Override
    public int size() {
        return map.size();
    }

    /**
     * Returns true if this set contains no elements.
     *

func hashOrder(key string, cardinality int) []int {
	if cardinality <= 0 {
		// Returns an empty int slice for cardinality < 0.
		return nil
	}

	nums := make([]int, cardinality)
	keyCrc := crc32.Checksum([]byte(key), crc32.IEEETable)

	start := int(keyCrc % uint32(cardinality))
	for i := 1; i <= cardinality; i++ {
		nums[i-1] = 1 + ((start + i) % cardinality)
	}
	return nums
}

	for _, etag := range etags {
		if etag == "" {
			continue
		}
		etagOccurrenceMap[etag]++
	}

	maxima = 0 // Counter for remembering max occurrence of elements.
	latest := ""

	// Find the common cardinality from previously collected
	// occurrences of elements.
	for etag, count := range etagOccurrenceMap {
		if count < maxima {
			continue
		}

		// We are at or above maxima
		if count > maxima {

	if cardinality <= 0 {
		return -1
	}
	keyCrc := crc32.Checksum([]byte(key), crc32.IEEETable)
	return int(keyCrc % uint32(cardinality))
}

func hashKey(algo string, key string, cardinality int, id [16]byte) int {
	switch algo {
	case formatErasureVersionV2DistributionAlgoV1:
		return crcHashMod(key, cardinality)
	case formatErasureVersionV3DistributionAlgoV2, formatErasureVersionV3DistributionAlgoV3:

import org.opensearch.search.aggregations.bucket.histogram.Histogram;
import org.opensearch.search.aggregations.bucket.terms.Terms;
import org.opensearch.search.aggregations.metrics.Avg;
import org.opensearch.search.aggregations.metrics.Cardinality;

import jakarta.annotation.Resource;

public class SearchLogService {

    private static final String YYYY_MM_DD_HH_MM = "yyyy-MM-dd HH:mm";

    private static final String COUNT = "count";

        regA(builder);
        return builder;
    }

    protected CardinalityAggregationBuilder regCardinalityA(String name, String field) {
        CardinalityAggregationBuilder builder = AggregationBuilders.cardinality(name).field(field);
        regA(builder);
        return builder;
    }

    protected ValueCountAggregationBuilder regCountA(String name, String field) {

        regA(builder);
        return builder;
    }

    protected CardinalityAggregationBuilder regCardinalityA(String name, String field) {
        CardinalityAggregationBuilder builder = AggregationBuilders.cardinality(name).field(field);
        regA(builder);
        return builder;
    }

    protected ValueCountAggregationBuilder regCountA(String name, String field) {

        regA(builder);
        return builder;
    }

    protected CardinalityAggregationBuilder regCardinalityA(String name, String field) {
        CardinalityAggregationBuilder builder = AggregationBuilders.cardinality(name).field(field);
        regA(builder);
        return builder;
    }

    protected ValueCountAggregationBuilder regCountA(String name, String field) {

   */
  protected final void expectContents(E... elements) {
    expectContents(asList(elements));
  }

  /**
   * Asserts that the collection under test contains exactly the given elements, respecting
   * cardinality but not order. Subclasses may override this method to provide stronger assertions,
   * e.g., to check ordering in lists, but realize that <strong>unless a test extends {@link