code: public static Map<String, ZipEntry> corporaInZipfile(ZipFile zip) throws IOException
    {
      Map<String, ZipEntry> result = new HashMap<>();
      
      for(ZipEntry e : getANNISEntry(zip, "corpus"))
      {
        String name = extractToplevelCorpusNames(zip.getInputStream(e));
        result.put(name, e);
      }
      
      return result;
    }
docs: List all corpora of a ZIP file and their paths.
  
  @param zip
  @return
  @throws IOException