* Even if empty string, treated as empty plainly. So "IF pmb != null" is false if empty.
     * @param crawlerStartTime The parameter value of crawlerStartTime. (NotNull)
     */
    public void setCrawlerStartTime(String crawlerStartTime) {
        registerVariable("crawlerStartTime", crawlerStartTime);
    }

    /**
     * Set the value of crawlerEndTime, used in parameter comment. <br>

                    postcard.setCrawlerExecTime(getValueFromMap(dataMap, "crawlerExecTime", "0"));
                    postcard.setCrawlerStartTime(getValueFromMap(dataMap, "crawlerStartTime", StringUtil.EMPTY));
                    postcard.setDataCrawlEndTime(getValueFromMap(dataMap, "dataCrawlEndTime", StringUtil.EMPTY));