@Override
    public NavigableMap<K, V2> subMap(@ParametricNullness K fromKey, @ParametricNullness K toKey) {
      return subMap(fromKey, true, toKey, false);
    }

    @Override
    public NavigableMap<K, V2> tailMap(@ParametricNullness K fromKey) {
      return tailMap(fromKey, true);
    }

    @Override
    public NavigableMap<K, V2> tailMap(@ParametricNullness K fromKey, boolean inclusive) {

			copySourceHeader: url.QueryEscape(SlashSeparator + bucketName + SlashSeparator + objectName),
			metadata: map[string]string{
				"Content-Type": "application/json",
			},
			copySourceSame: true,
			metadataCopy:   true,
			accessKey:      credentials.AccessKey,
			secretKey:      credentials.SecretKey,

			expectedRespStatus: http.StatusBadRequest,
		},

		// Test case - 9.