// Remove STANDARD StorageClass
	metadata = removeStandardStorageClass(metadata)
	// Clean meta etag keys 'md5Sum', 'etag', "expires", "x-amz-tagging".
	return cleanMetadataKeys(metadata, "md5Sum", "etag", "expires", xhttp.AmzObjectTagging, "last-modified", VersionPurgeStatusKey)
}

// Filter X-Amz-Storage-Class field only if it is set to STANDARD.

    assertThat(map.segments).hasLength(4);
    // initial capacity / concurrency level
    assertEquals(16 / map.segments.length, map.segments[0].table.length());

    assertFalse(map.evictsBySize());
    assertFalse(map.expires());
    assertFalse(map.expiresAfterWrite());
    assertFalse(map.expiresAfterAccess());
    assertFalse(map.refreshes());
  }

  public void testSetKeyEquivalence() {
    Equivalence<Object> testEquivalence =

    assertThat(map.segments).hasLength(4);
    // initial capacity / concurrency level
    assertEquals(16 / map.segments.length, map.segments[0].table.length());

    assertFalse(map.evictsBySize());
    assertFalse(map.expires());
    assertFalse(map.expiresAfterWrite());
    assertFalse(map.expiresAfterAccess());
    assertFalse(map.refreshes());
  }

  public void testSetKeyEquivalence() {
    Equivalence<Object> testEquivalence =

            }
        }

    }


    /*
     * Build a connection. Only one thread will ever call this method at
     * any one time. If this method throws an exception or the connect timeout
     * expires an encapsulating TransportException will be thrown from connect
     * and the transport will be in error.
     */

    protected abstract void doConnect () throws Exception;


    /*

	VersionID            string    // Specifies the versionID which needs to be overwritten or read
	MTime                time.Time // Is only set in POST/PUT operations
	Expires              time.Time // Is only used in POST/PUT operations

	DeleteMarker            bool // Is only set in DELETE operations for delete marker replication

		VersionID:                 objInfo.VersionID,
		IsLatest:                  objInfo.IsLatest,
		DeleteMarker:              objInfo.IsDeleteMarker,
		ContentType:               objInfo.ContentType,
		Expires:                   objInfo.Expires,
		StorageClass:              objInfo.StorageClass,
		ReplicationStatusInternal: objInfo.ReplicationStatus,
		UserTags:                  tags.String(),
	}

		sc = objInfo.StorageClass
	}
	putOpts = minio.PutObjectOptions{
		UserMetadata:    meta,
		ContentType:     objInfo.ContentType,
		ContentEncoding: objInfo.ContentEncoding,
		Expires:         objInfo.Expires,
		StorageClass:    sc,
		Internal: minio.AdvancedPutOptions{
			SourceVersionID:    objInfo.VersionID,
			ReplicationStatus:  minio.ReplicationStatusReplica,
			SourceMTime:        objInfo.ModTime,

  }

  /**
   * Returns a future that delegates to another but will finish early (via a {@link
   * TimeoutException} wrapped in an {@link ExecutionException}) if the specified duration expires.
   *
   * <p>The delegate future is interrupted and cancelled if it times out.
   *
   * @param delegate The future to delegate to.
   * @param time when to time out the future

                            if (!downloaded) {
                                // prevent additional checks of this artifact until it expires again
                                destination.setLastModified(System.currentTimeMillis());
                            }
                        } catch (UnsupportedOperationException e) {

 *       Future} is "completed" even if it is cancelled while its underlying work continues on a
 *       thread, an RPC, etc. The {@code Future} is also "completed" if it fails "early" -- for
 *       example, if the deadline expires on a {@code Future} returned from {@link
 *       Futures#withTimeout} while the {@code Future} it wraps continues its underlying work. So
 *       beware: <i>Your {@code AsyncCallable} should not complete its {@code Future} until it is