String[] extraQueries = new String[0];
        Map<String, Object> attributes = new HashMap<>();
        Locale locale = Locale.ENGLISH;
        SearchRequestType type = SearchRequestType.SEARCH;
        String similarDocHash = "";

        @Override
        public String getQuery() {
            return query;
        }

        @Override
        public Map<String, String[]> getFields() {
            return fields;

         *
         * @param similarDocHash the hash of the document to find similar documents to
         * @return this builder for method chaining
         */
        public SearchConditionBuilder similarDocHash(final String similarDocHash) {
            if (StringUtil.isNotBlank(similarDocHash)) {
                this.similarDocHash = similarDocHash;
            }
            return this;
        }