docs: protected boolean cleanFolder(File parentFolder, FileFilter filter, boolean continueOnError,
  			boolean deleteParentFolder) {
  		try {
  			if (getLogger().isDebugEnabled()) {
  				getLogger().debug(Messages.SarlBatchCompiler_9, parentFolder.toString());
  			}
  			return Files.cleanFolder(parentFolder, null, continueOnError, deleteParentFolder);
  		} catch (FileNotFoundException e) {
  			return true;
  		}
  	}