code: private ChemComp downloadAndAdd(String recordName){
  		final ChemComp cc = m_dlProvider.getChemComp(recordName);
  
  		// final File [] files = finder(m_tempDir.resolve("chemcomp").toString(), "cif.gz");
  		final File [] files = new File[1];
  		Path cif = m_tempDir.resolve("chemcomp").resolve(recordName + ".cif.gz");
  		files[0] = cif.toFile();
  		if (files[0] != null) {
  			addToZipFileSystem(m_zipFile, files, m_zipRootDir);
  			if (m_removeCif) for (File f : files) f.delete();
  		}
  		return cc;
  	}
docs: Use DownloadChemCompProvider to grab a gzipped cif record from the PDB.
  Zip all downloaded cif.gz files into the dictionary.
  
  @param recordName is the three-letter chemical component code (i.e. residue name).
  @return ChemComp matching recordName