code: public void addGeoPackage(T geoPackage) {
  		PropertiesCoreExtension<T, ?, ?, ?> propertiesExtension = getPropertiesExtension(geoPackage);
  		propertiesMap.put(geoPackage.getName(), propertiesExtension);
  	}
docs: Add GeoPackage
  
  @param geoPackage
  GeoPackage