code: public static void purgeTempFiles(String tempdir) {
  		if (tempdir == null) return;
  
  		s_logger.info("Removing: "+tempdir);
  		Path dlPath = Paths.get(tempdir).resolve("chemcomp");
  		File[] chemCompOutFiles = finder(dlPath.toString(), "cif.gz");
  		if (null != chemCompOutFiles) for (File f : chemCompOutFiles) f.delete();
  		dlPath.toFile().delete();
  	}
docs: Cleanup chemical component (.cif.gz) files downloaded to tmpdir.
  @param tempdir : path to temporary directory for chemical components