docs: private Integer getNumId(String idString, boolean isUri) {
  		String numString;
  		if (isUri) {
  			if (!idString.startsWith("http://www.wikidata.org/entity/")) {
  				return 0;
  			}
  			numString = idString.substring("http://www.wikidata.org/entity/Q"
  					.length());
  		} else {
  			numString = idString.substring(1);
  		}
  		return Integer.parseInt(numString);
  	}