*/
    public String getFilterIndex() {
        return filterIndex;
    }

    /**
     * Sets the filter index name.
     * @param filterIndex The filter index name.
     */
    public void setFilterIndex(final String filterIndex) {
        this.filterIndex = filterIndex;
    }

    /**
     * Returns the number of queue shards.
     * @return The number of queue shards.
     */