code: public static Style createDefaultLineStyle() {
          FeatureTypeStyle featureTypeStyle = sf.createFeatureTypeStyle();
          featureTypeStyle.rules().add(createDefaultLineRule());
  
          Style style = sf.createStyle();
          style.featureTypeStyles().add(featureTypeStyle);
  
          return style;
      }
docs: Creates a default {@link Style} for a line.
  
  @return the default style.