// do an additional verification whether object exists when object is deletemarker and request
		// is from replication
		if opts.CheckDMReplicationReady {
			topts := opts
			topts.VersionID = ""
			goi, gerr := getObjectInfo(ctx, bucket, object, topts)
			if gerr == nil || goi.VersionID != "" { // object layer returned more info because object is deleted
				w.Header().Set(xhttp.MinIOTargetReplicationReady, "true")

				// Read last byte of object
				fmt.Sprintf("bytes=-%d", 1),
				// Read all but first byte of object
				"bytes=1-",
				// Read first half of object
				fmt.Sprintf("bytes=%d-%d", 0, objLen/2),
				// Read last half of object
				fmt.Sprintf("bytes=-%d", objLen/2),
				// Read middle half of object
				fmt.Sprintf("bytes=%d-%d", objLen/4, objLen*3/4),
				// Read 100MiB of the object from the beginning

    LocalCache<Object, Object> map = makeLocalCache(createCacheBuilder().removalListener(listener));
    assertThat(listener.isEmpty()).isTrue();

    Object one = new Object();
    Object two = new Object();
    Object three = new Object();
    Object four = new Object();
    Object five = new Object();
    Object six = new Object();

    map.put(one, two);
    map.remove(one);

    LocalCache<Object, Object> map = makeLocalCache(createCacheBuilder().removalListener(listener));
    assertThat(listener.isEmpty()).isTrue();

    Object one = new Object();
    Object two = new Object();
    Object three = new Object();
    Object four = new Object();
    Object five = new Object();
    Object six = new Object();

    map.put(one, two);
    map.remove(one);

// HEAD requests on an object validates the existence of the object.
// The responses for fetching the object when If-Modified-Since
// and If-Unmodified-Since headers set are validated.
// If-Modified-Since - Return the object only if it has been modified since the specified time, else return a 304 (not modified).

 * <li><code>merge<i>Classname</i>( <i>Classname</i> target, <i>Classname</i> source, boolean sourceDominant,
 * Map&lt;Object, Object&gt; context )</code> for each model class</li>
 * <li><code>merge<i>Classname</i>_<i>FieldName</i>( <i>Classname</i> target, <i>Classname</i> source, boolean

	TaggingTimestamp = "tagging-timestamp"
	// ObjectLockRetentionTimestamp - the last time a object lock metadata modification happened on this cluster for this object version
	ObjectLockRetentionTimestamp = "objectlock-retention-timestamp"
	// ObjectLockLegalHoldTimestamp - the last time a legal hold metadata modification happened on this cluster for this object version

        V1 extends @Nullable Object,
        V2 extends @Nullable Object,
        V3 extends @Nullable Object,
        V4 extends @Nullable Object,
        V5 extends @Nullable Object,
        U extends @Nullable Object> {
      /**
       * Applies this function to five inputs, or throws an exception if unable to do so.
       *

    public boolean equals(@Nullable Object object) {
      if (object instanceof ValueDifference) {
        ValueDifference<?> that = (ValueDifference<?>) object;
        return Objects.equals(this.left, that.leftValue())
            && Objects.equals(this.right, that.rightValue());
      }
      return false;
    }

    @Override
    public int hashCode() {
      return Objects.hash(left, right);
    }

    public boolean equals(@Nullable Object object) {
      if (object instanceof ValueDifference) {
        ValueDifference<?> that = (ValueDifference<?>) object;
        return Objects.equals(this.left, that.leftValue())
            && Objects.equals(this.right, that.rightValue());
      }
      return false;
    }

    @Override
    public int hashCode() {
      return Objects.hash(left, right);
    }