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);

            example: [name]
        - name: facet.field
          in: query
          description: Facet field name
          required: false
          style: form
          explode: true
          schema:
            type: array
            items:
              type: string
            example: [label]
        - name: facet.query
          in: query
          description: Facet query
          required: false

        }
        return facetFieldSet != null && facetFieldSet.contains(field);
    }

    /**
     * Checks if the specified sort value is valid for facet sorting.
     *
     * @param sort the sort value to check
     * @return true if the sort value is valid for facets ("count" or "index"), false otherwise
     */
    public boolean isFacetSortValue(final String sort) {
        return "count".equals(sort) || "index".equals(sort);

    <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>

            RenderDataUtil.register(data, "labelTypeItems", labelTypeItems);
            RenderDataUtil.register(data, "displayLabelTypeItems", labelTypeItems != null && !labelTypeItems.isEmpty());
            // Facet query views for filter UI (file type, timestamp, size)
            RenderDataUtil.register(data, "facetQueryViewList", ComponentUtil.getViewHelper().getFacetQueryViewList());
        });
    }

    /**

        assertEquals(emptyString, decoded);
    }

    @Test
    public void test_facet_prefix_usage() {
        // Test that facet prefixes can be used correctly
        String fieldName = "category";
        String encodedFieldName = BaseEncoding.base64().encode(fieldName.getBytes(StandardCharsets.UTF_8));

    // ============================================================
    // Facet and Query Constants
    // ============================================================

    /** Prefix for facet field identifiers. */
    public static final String FACET_FIELD_PREFIX = "field:";

    /** Prefix for facet query identifiers. */
    public static final String FACET_QUERY_PREFIX = "query:";

query.fuzzy.transpositions=true

# facet

# Fields for facet queries.
query.facet.fields=label
# Size of facet fields.
query.facet.fields.size=100
# Minimum document count for facet fields.
query.facet.fields.min_doc_count=1
# Sort order for facet fields.
query.facet.fields.sort=count.desc
# Value for missing facet fields.
query.facet.fields.missing=
# Facet queries definition.
query.facet.queries=\

        final SearchResult result = SearchResult.create().allRecordCount(1000).partialResults(true).build();

        assertTrue(result.isPartialResults());
    }

    /**
     * Test SearchResult with facet response.
     */
    @Test
    public void test_searchResultWithFacetResponse() {
        final FacetResponse facetResponse = new FacetResponse(null);