code: public void setSkipURLString(String skipURL) {
  		this.skipURL = skipURL;
  		getConfig().setProperty(SPIDER_SKIP_URL, this.skipURL);
  		parseSkipURL(this.skipURL);
  	}
docs: Sets the skip url string. This string is being parsed into a pattern which is used to check if a url
  should be skipped while crawling.
  
  @param skipURL the new skip url string