.replace("__SIZE__", fessConfig.getIndexReindexSize())//
                .replace("__DEST_INDEX__", toIndex);
        return reindex(fromIndex, toIndex, source, waitForCompletion);
    }

    protected boolean reindex(final String fromIndex, final String toIndex, final String source, final boolean waitForCompletion) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

  }

  private ImmutableSortedMap<K, V> getSubMap(int fromIndex, int toIndex) {
    if (fromIndex == 0 && toIndex == size()) {
      return this;
    } else if (fromIndex == toIndex) {
      return emptyMap(comparator());
    } else {
      return new ImmutableSortedMap<>(
          keySet.getSubSet(fromIndex, toIndex), valueList.subList(fromIndex, toIndex));
    }
  }

  /**

  }

  private ImmutableSortedMap<K, V> getSubMap(int fromIndex, int toIndex) {
    if (fromIndex == 0 && toIndex == size()) {
      return this;
    } else if (fromIndex == toIndex) {
      return emptyMap(comparator());
    } else {
      return new ImmutableSortedMap<>(
          keySet.getSubSet(fromIndex, toIndex), valueList.subList(fromIndex, toIndex));
    }
  }

  /**

			Drivers: []storage.CSINodeDriver{{
				Name:         "driver1",
				NodeID:       "node1",
				TopologyKeys: []string{"key1", "key2"},
			}, {
				Name:         "driver1",
				NodeID:       "nodeX",
				TopologyKeys: []string{"keyA", "keyB"},
			}},
		},
	}, {
		// single driver with duplicate topology keys in driver specs
		ObjectMeta: metav1.ObjectMeta{Name: "foo11"},
		Spec: storage.CSINodeSpec{