try {
            return xpathAPICache.get(Thread.currentThread().getName());
        } catch (final ExecutionException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to retrieval a cache.", e);
            }
            return new XPathAPI();
        }
    }

    /**
     * Returns the header for the result data.
     * @return The result data header.
     */

            fieldAnalyzerMappingMap.put(analyzerSettingsIndexName, getFieldAnalyzerMapping());
        } catch (final IOException e) {
            throw new SuggestSettingsException("Failed to create mappings.");
        }
    }

    /**
     * Returns the name of the analyzer settings index.
     * @return The analyzer settings index name.
     */

        ResponseData responseData = new ResponseData();
        responseData.setUrl("http://example.com");

        // Multiple calls should return same result
        boolean firstResult = rule.match(responseData);
        boolean secondResult = rule.match(responseData);
        boolean thirdResult = rule.match(responseData);

        assertFalse(ruleManager.hasRule(rule1));
        assertFalse(ruleManager.hasRule(rule2));
        assertFalse(ruleManager.hasRule(rule3));
    }

    /**
     * Test getRule call count
     */
    public void test_getRuleCallCount() {
        TestRule rule = new TestRule("rule1", true);
        ruleManager.addRule(rule);

        ResponseData responseData = new ResponseData();