docs: public String getCacheId() {
  		return "FeatureStyleInfo{" + "index=" + index + ", name='" + name + '\'' + ", formula='" + formula + '\''
  				+ ", fillColor='" + fillColor + '\'' + ", fillOpacity=" + fillOpacity + ", strokeColor='" + strokeColor
  				+ '\'' + ", strokeOpacity=" + strokeOpacity + ", strokeWidth=" + strokeWidth + ", dashArray='"
  				+ dashArray + '\'' + ", symbol=" + symbol + ", styleId='" + styleId + '\'' + '}';
  	}