return ruleList.contains(rule);
    }

    /*
     * (non-Javadoc)
     *
     * @see
     * org.codelibs.fess.crawler.rule.RuleManager#removeRule(org.codelibs.fess.crawler.rule.Rule)
     */
    @Override
    public boolean removeRule(final Rule rule) {
        return ruleList.remove(rule);
    }

/**
 * @author shinsuke
 *
 */
public interface RuleManager {

    Rule getRule(ResponseData responseData);

    void addRule(Rule rule);

    void addRule(int index, Rule rule);

    boolean removeRule(Rule rule);

    boolean hasRule(Rule rule);

        assertTrue(ruleManager.hasRule(rule2));
        assertTrue(ruleManager.hasRule(rule3));

        ruleManager.removeRule(rule2);

        assertFalse(ruleManager.hasRule(rule2));
        assertTrue(ruleManager.hasRule(rule3));

        ruleManager.removeRule(rule3);

        assertFalse(ruleManager.hasRule(rule2));
        assertFalse(ruleManager.hasRule(rule3));
    }