@Override
        public void setLastModified(Long lastModified) {
        }

        @Override
        public void setDepth(Integer depth) {
        }

        @Override
        public void setParentUrl(String parentUrl) {
        }

        @Override
        public void setUrl(String url) {
        }

        @Override
        public void setEncoding(String encoding) {
        }

            // Do nothing in test
        }

        @Override
        public void setUrl(String url) {
            // Do nothing in test
        }

        @Override
        public void setParentUrl(String parentUrl) {
            // Do nothing in test
        }

        @Override
        public void setId(String id) {
            // Do nothing in test
        }
    }

    }

    @Test
    public void test_responseData_parentUrl() {
        final ResponseData responseData = new ResponseData();

        assertNull(responseData.getParentUrl());
        responseData.setParentUrl("http://example.com/parent");
        assertEquals("http://example.com/parent", responseData.getParentUrl());
    }

    @Test
    public void test_responseData_lastModified() {

                    log(logHelper, LogType.NOT_MODIFIED, crawlerContext, urlQueue);

                    responseData.setExecutionTime(systemHelper.getCurrentTimeAsLong() - startTime);
                    responseData.setParentUrl(urlQueue.getParentUrl());
                    responseData.setSessionId(crawlerContext.getSessionId());
                    responseData.setHttpStatusCode(org.codelibs.fess.crawler.Constants.NOT_MODIFIED_STATUS);

            responseData.setHttpStatusCode(200);
            responseData.setLastModified(new Date());
            responseData.setMethod("GET");
            responseData.setMimeType("text/html");
            responseData.setParentUrl("http://fess.codelibs.org/");
            responseData.setResponseBody(data.getBytes());
            responseData.setSessionId("test-1");
            responseData.setStatus(0);