*
     * @return the BucketOrder instance representing the sort configuration
     */
    public BucketOrder getBucketOrder() {
        if (StringUtil.isNotBlank(sort)) {
            final String[] values = sort.split("\\.");
            final boolean asc;
            if (values.length > 1) {
                asc = !"desc".equalsIgnoreCase(values[1]);

                "{\"prefix\":{\"site\":{\"value\":\"aaa\",\"boost\":1.0}}}", //
                "site:aaa");

        assertQueryBuilder("{\"timestamp\":{\"order\":\"asc\"}}", "sort:timestamp");
        assertQueryBuilder("{\"timestamp\":{\"order\":\"asc\"}}", "sort:timestamp.asc");
        assertQueryBuilder("{\"timestamp\":{\"order\":\"desc\"}}", "sort:timestamp.desc");

        try {
            assertQueryBuilder("", "sort:xxx");

labels.search_result_sort_filename_asc=by Filename (asc)
labels.search_result_sort_filename_desc=by Filename (desc)
labels.search_result_sort_created_asc=by Date (asc)
labels.search_result_sort_created_desc=by Date (desc)
labels.search_result_sort_content_length_asc=by Size (asc)
labels.search_result_sort_content_length_desc=by Size (desc)
labels.search_result_sort_last_modified_asc=by Last Modified (asc)

For example, to verify the signature of `plugin-publish-plugin-2.0.0.jar` and its signature file `plugin-publish-plugin-2.0.0.jar.asc`, use this command:

```bash
gpg --verify plugin-publish-plugin-2.0.0.jar.asc plugin-publish-plugin-2.0.0.jar
```

	Option  string        // WITH PARSER parser_name
	Fields  []IndexOption // Note: IndexOption's Field maybe the same
}

type IndexOption struct {
	*Field
	Expression string
	Sort       string // DESC, ASC
	Collate    string
	Length     int
	Priority   int
}

// ParseIndexes parse schema indexes
func (schema *Schema) ParseIndexes() []*Index {
	indexesByName := map[string]*Index{}
	indexes := []*Index{}

		customizable.
	</dd>
	<dt>Sort</dt>
	<dd>
		sort field sorts documents by a specified field name. The format is
		"sort:&lt;field&gt;.&lt;order&gt;", where &lt;order&gt; is asc or
		desc. If you want to find documents which has "Fess" and sort them in
		descending order, you can enter:
		<pre>Fess sort:content_length.desc</pre>
		The available sort field are "created", "content_length" and

			t.Fatalf("ID expects : not equal 0, got %v", u1.ID)
		} else if u2.ID == 0 {
			t.Fatalf("ID expects : not equal 0, got %v", u2.ID)
		}

		var gotUsers []user
		results = DB.Where("id in (?, ?)", u1.ID, u2.ID).Order("id asc").Select("id, name").Find(&gotUsers)
		if results.Error != nil {
			t.Fatalf("errors happened on first: %v", results.Error)
		} else if results.RowsAffected != 2 {

	// first
	sql = DB.ToSQL(func(tx *gorm.DB) *gorm.DB {
		return tx.Model(&User{}).Where(&User{Name: "foo", Age: 20}).Limit(10).Offset(5).Order("name ASC").First(&User{})
	})
	assertEqualSQL(t, `SELECT * FROM "users" WHERE ("users"."name" = 'foo' AND "users"."age" = 20) AND "users"."deleted_at" IS NULL ORDER BY name ASC,"users"."id" LIMIT 1 OFFSET 5`, sql)

	// last and unscoped
	sql = DB.ToSQL(func(tx *gorm.DB) *gorm.DB {

                Set.of(), //
                "{\"timestamp\":{\"order\":\"asc\"}}", //
                buildQuery("sort:timestamp"));
        assertQueryContext(query, Map.of(), //
                Set.of(), //
                "{\"timestamp\":{\"order\":\"asc\"}}", //
                buildQuery("sort:timestamp.asc"));
        assertQueryContext(query, Map.of(), //
                Set.of(), //

labels.search_result_sort_filename_asc=by Filename (asc)
labels.search_result_sort_filename_desc=by Filename (desc)
labels.search_result_sort_created_asc=by Date (asc)
labels.search_result_sort_created_desc=by Date (desc)
labels.search_result_sort_content_length_asc=by Size (asc)
labels.search_result_sort_content_length_desc=by Size (desc)
labels.search_result_sort_last_modified_asc=by Last Modified (asc)