DefaultContentsParser defaultContentsParser = new DefaultContentsParser();
    String[] supportedFields = new String[] { "content", "title" };
    String[] tagFieldNames = new String[] { "label", "virtual_host" };
    String roleFieldName = "role";

    @BeforeClass
    public static void beforeClass() throws Exception {
        runner = new OpenSearchRunner();
        runner.onBuild((number, settingsBuilder) -> {

        }
        final String[] tags = tagList.toArray(new String[tagList.size()]);
        final String[] roles1 = SuggestUtil.parseQuery(queryString, roleFieldName);
        final String[] roles2 = filterQueryString == null ? new String[0] : SuggestUtil.parseQuery(filterQueryString, roleFieldName);
        final String[] roles = new String[roles1.length + roles2.length];

        if (roles1.length > 0) {

     *
     * @param queryLog the query log to parse
     * @param fields the fields to extract from the query log
     * @param tagFieldNames the names of the fields to use as tags
     * @param roleFieldName the name of the field to use for roles
     * @param readingConverter the converter to use for reading values
     * @param normalizer the normalizer to use for normalizing values

        return this;
    }

    /**
     * Sets the role field name.
     * @param roleFieldName The role field name.
     * @return This SuggestIndexer instance.
     */
    public SuggestIndexer setRoleFieldName(final String roleFieldName) {
        this.roleFieldName = roleFieldName;
        return this;
    }

    /**
     * Sets the reading converter.

        /** Tag field name key. */
        public static final String TAG_FIELD_NAME = "tagFieldName";
        /** Role field name key. */
        public static final String ROLE_FIELD_NAME = "roleFieldName";
        /** Language field name key. */
        public static final String LANG_FIELD_NAME = "langFieldName";
        /** Parallel processing key. */
        public static final String PARALLEL_PROCESSING = "parallel";