code: public void setStyle(StyleRow styleRow, GeometryType geometryType) {
  		if (geometryType != null) {
  			if (styleRow != null) {
  				styles.put(geometryType, styleRow);
  			} else {
  				styles.remove(geometryType);
  			}
  		} else {
  			defaultStyle = styleRow;
  		}
  	}
docs: Set the style for the geometry type
  
  @param styleRow
  style row
  @param geometryType
  geometry type