val rule = findMatchingRule(domainLabels)
    if (domainLabels.size == rule.size && rule[0][0] != EXCEPTION_MARKER) {
      return null // The domain is a public suffix.
    }

    val firstLabelOffset =
      if (rule[0][0] == EXCEPTION_MARKER) {
        // Exception rules hold the effective TLD plus one.
        domainLabels.size - rule.size
      } else {

    /**
     * Gets a boost document rule by its ID.
     * @param id The boost document rule ID.
     * @return Optional entity containing the boost document rule if found.
     */
    public OptionalEntity<BoostDocumentRule> getBoostDocumentRule(final String id) {
        return boostDocumentRuleBhv.selectByPK(id);
    }

    /**
     * Stores (inserts or updates) a boost document rule.

     *
     * @see
     * org.codelibs.fess.crawler.rule.RuleManager#addRule(org.codelibs.fess.crawler.rule.Rule)
     */
    /**
     * Adds a rule to the end of the rule list.
     * @param rule the rule to add
     */
    @Override
    public void addRule(final Rule rule) {
        ruleList.add(rule);
    }

    /**
     * Adds a rule at the specified position in the rule list.
     * @param index the position to insert the rule

        public void addRule(int index, Rule rule) {
            if (rule != null) {
                rules.add(index, rule);
            }
        }

        @Override
        public boolean removeRule(Rule rule) {
            return rules.remove(rule);
        }

        @Override
        public boolean hasRule(Rule rule) {
            return rules.contains(rule);
        }
    }

    /**

			// we can skip this rule if it doesn't match the tested
			// prefix.
			if !strings.HasPrefix(prefix, rule.GetPrefix()) && !strings.HasPrefix(rule.GetPrefix(), prefix) {
				continue
			}
		}

		if rule.NoncurrentVersionExpiration.NoncurrentDays > 0 {
			return true
		}
		if rule.NoncurrentVersionExpiration.NewerNoncurrentVersions > 0 {
			return true
		}

	if len(c.Rules) == 0 {
		return false
	}
	for _, rule := range c.Rules {
		if rule.Status == Disabled {
			continue
		}
		if len(prefix) > 0 && len(rule.Filter.Prefix) > 0 {
			// incoming prefix must be in rule prefix
			if !recursive && !strings.HasPrefix(prefix, rule.Filter.Prefix) {
				continue
			}
			// If recursive, we can skip this rule if it doesn't match the tested prefix or level below prefix

		{
			inputXML:    `<ServerSideEncryptionConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/"><Rule><ApplyServerSideEncryptionByDefault><SSEAlgorithm>AES256</SSEAlgorithm></ApplyServerSideEncryptionByDefault></Rule><Rule><ApplyServerSideEncryptionByDefault><SSEAlgorithm>AES256</SSEAlgorithm></ApplyServerSideEncryptionByDefault></Rule></ServerSideEncryptionConfiguration>`,
			expectedErr: errors.New("only one server-side encryption rule is allowed at a time"),

    /**
     * Returns whether this rule is a default rule that matches all responses.
     * @return true if this is a default rule, false otherwise
     */
    public boolean isDefaultRule() {
        return defaultRule;
    }

    /**
     * Sets whether this rule should be a default rule that matches all responses.
     * @param defaultRule true to make this a default rule, false otherwise
     */

                              <Status></Status>
	                    </Rule>`,
			expectedErr: errEmptyRuleStatus,
		},
		{ // Rule with invalid status
			inputXML: ` <Rule>
			                  <ID>rule with invalid status</ID>
                              <Status>OK</Status>
	                    </Rule>`,
			expectedErr: errInvalidRuleStatus,
		},

			expectedParsingErr:    nil,
			expectedValidationErr: nil,
		},
		// Lifecycle with empty Filter tag
		{