docs: public static void setPreferredLineDrawingAlgorithm(BusLayerDrawerType algorithm) {
  		final Preferences prefs = Preferences.userNodeForPackage(BusLayerConstants.class);
  		if (prefs != null) {
  			if (algorithm == null) {
  				prefs.remove("DRAWING_ALGORITHM"); //$NON-NLS-1$
  			} else {
  				prefs.put("DRAWING_ALGORITHM", algorithm.name()); //$NON-NLS-1$
  			}
  		}
  	}