return p
	}
	return ""
}

// Tags - a rule can either have tag under <filter></filter> or under
// <filter><and></and></filter>. This method returns all the tags from the
// rule in the format tag1=value1&tag2=value2
func (r Rule) Tags() string {
	if !r.Filter.Tag.IsEmpty() {
		return r.Filter.Tag.String()
	}
	if len(r.Filter.And.Tags) != 0 {
		var buf bytes.Buffer

        ElevateWord elevateWord3 = new ElevateWord("c", 100.0f, Collections.singletonList("c"), Collections.singletonList("content"),
                Collections.singletonList("tag1"), Collections.singletonList("role1"));

        settings.elevateWord().add(elevateWord1);
        settings.elevateWord().add(elevateWord2);
        settings.elevateWord().add(elevateWord3);

     */
    public void setQuery(final String query) {
        this.query = query;
    }

    /**
     * Adds a tag to filter by.
     * @param tag The tag.
     */
    public void addTag(final String tag) {
        tags.add(tag);
    }

    /**
     * Adds a role to filter by.
     * @param role The role.
     */
    public void addRole(final String role) {

	}
	return r.Filter.And.Prefix
}

// Tags - a rule can either have tag under <filter></filter> or under
// <filter><and></and></filter>. This method returns all the tags from the
// rule in the format tag1=value1&tag2=value2
func (r Rule) Tags() string {
	if !r.Filter.Tag.IsEmpty() {
		return r.Filter.Tag.String()
	}
	if len(r.Filter.And.Tags) != 0 {
		var buf bytes.Buffer

                new String[] { "field1", "field2" }, 10, // queryFreq
                5, // docFreq
                2.0f, // userBoost
                new String[] { "tag1", "tag2" }, new String[] { "role1" }, new String[] {}, // languages
                SuggestItem.Kind.DOCUMENT);
        item.setTimestamp(ZonedDateTime.now());

    return thread
  }

  private fun newRequest(url: String): Request = Request.Builder().url(url).build()

  private fun newRequest(
    url: String,
    tag: String,
  ): Request =
    Request
      .Builder()
      .url(url)
      .tag(tag)
      .build()

 */
internal sealed class Tags {
  /**
   * Returns a tags instance that maps [key] to [value]. If [value] is null, this returns a tags
   * instance that does not have any mapping for [key].
   */
  abstract fun <T : Any> plus(
    key: KClass<T>,
    value: T?,
  ): Tags

  abstract operator fun <T : Any> get(key: KClass<T>): T?
}

/** An empty tags. This is always the tail of a [LinkedTags] chain. */

)

func (tag Tag) String() string {
	return tag.Key + "=" + tag.Value
}

// IsEmpty returns whether this tag is empty or not.
func (tag Tag) IsEmpty() bool {
	return tag.Key == ""
}

// Validate checks this tag.
func (tag Tag) Validate() error {
	if len(tag.Key) == 0 || utf8.RuneCountInString(tag.Key) > 128 {
		return errInvalidTagKey
	}

					set:                     true,
				},
			})
		}
		return lc
	}

	lc := prepLifecycleCfg([]string{"tag3", "tag4", "tag5"}, []int{3, 4, 5})
	evaluator := NewEvaluator(lc)
	tagKeys := []string{"tag3", "tag3", "tag3", "tag4", "tag4", "tag5", "tag5"}
	verIDs := []string{
		"0NdAikoUVNGEpCUuB9vl.XyoMftMXCSg", "19M6Z405yFZuYygnnU9jKzsOBamTZK_7", "0PmlJdFWi_9d6l_dAkWrrhP.bBgtFk6V", // spellchecker:disable-line

func (tag Tag) IsEmpty() bool {
	return tag.Key == ""
}

// Validate checks this tag.
func (tag Tag) Validate() error {
	if len(tag.Key) == 0 || utf8.RuneCountInString(tag.Key) > 128 {
		return errInvalidTagKey
	}

	if utf8.RuneCountInString(tag.Value) > 256 {
		return errInvalidTagValue
	}

	return nil