assertTrue(queryFieldConfig.searchFieldSet.contains("field3"));
    }

    /**
     * Test that setting facet fields creates both array and Set.
     */
    @Test
    public void test_setFacetFields_createsSet() {
        String[] fields = { "facet1", "facet2", "facet3" };
        queryFieldConfig.setFacetFields(fields);

        // Verify array is set
        assertNotNull(queryFieldConfig.facetFields);

    public void test_getFacetFields() {
        String[] fields = { "facet1", "facet2", "facet3" };
        queryFieldConfig.setFacetFields(fields);

        String[] result = queryFieldConfig.getFacetFields();
        assertSame(fields, result);
    }

    @Test
    public void test_setFacetFields() {
        String[] fields = { "facet1", "facet2", "facet3" };
        queryFieldConfig.setFacetFields(fields);

    }

    /**
     * Gets the fields that can be used for faceted search.
     *
     * @return array of field names that can be used for faceted search
     */
    public String[] getFacetFields() {
        return facetFields;
    }

    /**
     * Sets the fields that can be used for faceted search.
     * Also updates the facetFieldSet for O(1) lookup performance.
     *

     */
    public void setExecTime(final long execTime) {
        this.execTime = execTime;
    }

    /**
     * Gets the facet response containing aggregated search facets and their counts.
     *
     * @return the facet response, or null if no facets were requested
     */
    public FacetResponse getFacetResponse() {
        return facetResponse;
    }

    /**

     */
    public void setDocumentItems(final List<Map<String, Object>> documentItems) {
        this.documentItems = documentItems;
    }

    /**
     * Sets the facet response containing aggregated search facets.
     *
     * @param facetResponse The facet response
     */
    public void setFacetResponse(final FacetResponse facetResponse) {
        this.facetResponse = facetResponse;
    }

    /**

            example: ["timestamp:[now/d-1d TO *]"]
        - name: facet.size
          in: query
          description: Item size in facets returned by facet.field
          required: false
          schema:
            type: integer
            minimum: 0
            exclusiveMinimum: false
            default: 10
            example: 10
        - name: facet.minDocCount
          in: query

- **Index Size**: Storage requirements for search indices
- **Crawl Sources**: URLs, file shares, databases being indexed
- **Custom Configurations**: URL patterns, security rules, metadata fields
- **Search Features**: Facets, suggestions, security filtering, ranking rules
- **Integration Points**: Applications consuming search APIs
- **User Permissions**: Access control and label configurations

### 2. Infrastructure Requirements

        request.setParameterValues("facet.field", new String[] { "field1", "field2" });
        request.setParameterValues("facet.query", new String[] { "query1", "query2" });
        request.setParameter("facet.size", "100");
        request.setParameter("facet.minDocCount", "5");
        request.setParameter("facet.sort", "count");
        request.setParameter("facet.missing", "other");

    /** Prefix for geographic query parameters */
    private static final String GEO_PREFIX = "geo.";

    /** Prefix for facet query parameters */
    private static final String FACET_PREFIX = "facet.";

    /** Format identifier for PDF date parsing */
    private static final String PDF_DATE = "pdf_date";

    /** Regular expression pattern for matching email addresses */

    <example>
      ${fe:pagingQuery("ex_q=timestamp:")}
    </example>
  </function>

  <function>
    <description>
      Returns query parameters for Facet.
    </description>
    <name>facetQuery</name>
    <function-class>org.codelibs.fess.taglib.FessFunctions</function-class>
    <function-signature>java.lang.String facetQuery()</function-signature>
    <example>