}
    }

    /**
     * Checks if this response contains any facet information.
     *
     * @return true if either query count map or field list is not null
     */
    public boolean hasFacetResponse() {
        return queryCountMap != null || fieldList != null;
    }

    /**
     * Represents a field facet with its name and value counts.

            requestedTime = data.getRequestedTime();
            final FacetResponse facetResponse = data.getFacetResponse();
            if (facetResponse != null && facetResponse.hasFacetResponse()) {
                // facet field
                if (facetResponse.getFieldList() != null) {
                    facetField = facetResponse.getFieldList().stream().map(field -> {

                        }
                    }
                    buf.append('}');
                }
            }
            buf.append(']');
            if (facetResponse != null && facetResponse.hasFacetResponse()) {
                // facet field
                buf.append(',');
                buf.append("\"facet_field\":[");
                if (facetResponse.getFieldList() != null) {