checkState(keyEquivalence == null, "key equivalence was already set to %s", keyEquivalence);
    keyEquivalence = checkNotNull(equivalence);
    this.useCustomMap = true;
    return this;
  }

  Equivalence<Object> getKeyEquivalence() {
    return MoreObjects.firstNonNull(keyEquivalence, getKeyStrength().defaultEquivalence());
  }

  /**

    Set<String> set = of("a", "b");
    assertEquals(newHashSet("a", "b"), set);
  }

  public void testCreation_threeElements() {
    Set<String> set = of("a", "b", "c");
    assertEquals(newHashSet("a", "b", "c"), set);
  }

  public void testCreation_fourElements() {
    Set<String> set = of("a", "b", "c", "d");
    assertEquals(newHashSet("a", "b", "c", "d"), set);
  }

  public void testCreation_fiveElements() {

	tracker.setQueuedBuckets(buckets)
	if err := tracker.save(ctx); err != nil {
		return err
	}

	// Start or resume healing of this erasure set
	if err = z.serverPools[poolIdx].sets[setIdx].healErasureSet(ctx, tracker.QueuedBuckets, tracker); err != nil {
		return err
	}

	// if objects have failed healing, we attempt a retry to heal the drive upto 3 times before giving up.

    }

    /**
     * Sets the query to filter which documents to export.
     *
     * @param queryBuilder the query to use for filtering documents
     * @return this instance for method chaining
     */
    public IndexExportJob query(final QueryBuilder queryBuilder) {
        this.queryBuilder = queryBuilder;
        return this;
    }

    /**
     * Sets the export format.
     *

import org.elasticsearch.common.settings.ClusterSettings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.common.util.set.Sets;
import org.elasticsearch.gateway.GatewayAllocator;
import org.elasticsearch.snapshots.EmptySnapshotsInfoService;

import java.util.Collection;
import java.util.Collections;
import java.util.List;

  }

  @CollectionSize.Require(SEVERAL)
  @MapFeature.Require(SUPPORTS_REMOVE)
  /*
   * SetMultimap.asMap essentially returns a Map<K, Set<V>>; we just can't declare it that way.
   * Thus, calls like asMap().values().remove(someSet) are safe because they are comparing a set to
   * a collection of other sets.
   */
  @SuppressWarnings("CollectionUndefinedEquality")
  public void testValuesRemove() {

     * @return the property value
     */
    <T> T getValue(Object target);

    /**
     * Sets the value of the property.
     *
     * @param target
     *            the target object. Must not be {@literal null}
     * @param value
     *            the value to set to the property
     */
    void setValue(Object target, Object value);

    /**

	}
	if b == nil {
		if opts.AutoEncrypt {
			headers.Set(xhttp.AmzServerSideEncryption, xhttp.AmzEncryptionKMS)
		}
		return
	}

	switch b.Algo() {
	case xhttp.AmzEncryptionAES:
		headers.Set(xhttp.AmzServerSideEncryption, xhttp.AmzEncryptionAES)
	case xhttp.AmzEncryptionKMS:
		headers.Set(xhttp.AmzServerSideEncryption, xhttp.AmzEncryptionKMS)
		headers.Set(xhttp.AmzServerSideEncryptionKmsID, b.KeyID())
	}
}

     */
    public void setImageExtention(final String imageExtention) {
        this.imageExtention = imageExtention;
    }

    /**
     * Sets the split size for directory organization.
     *
     * @param splitSize the split size to set
     */
    public void setSplitSize(final int splitSize) {
        this.splitSize = splitSize;
    }

    /**

              @Override
              public SortedSet<String> create(String[] elements) {
                SortedSet<String> set = new TreeSet<>(arbitraryNullFriendlyComparator());
                Collections.addAll(set, elements);
                return set;
              }
            })
        .named("TreeSet, with comparator")
        .withFeatures(
            SetFeature.GENERAL_PURPOSE,