public void closeRetainGeoPackages(Collection<String> retain) {
		Set<String> close = new HashSet<>(propertiesMap.keySet());
		close.removeAll(retain);
		for (String name : close) {
			closeGeoPackage(name);
		}
	}
public void closeRetainGeoPackages ( Collection < String > retain ) { Set < String > close = new HashSet < > ( propertiesMap . keySet ( ) ) ; close . removeAll ( retain ) ; for ( String name : close ) { closeGeoPackage ( name ) ; } }
Close GeoPackages not specified in the retain GeoPackage names

@param retain
GeoPackages to retain