code: private void checkTopLevelCorpus() throws ConflictingCorpusException
    {
      String corpusName = getTopLevelCorpusFromTmpArea();
      if (existConflictingTopLevelCorpus(corpusName))
      {
        String msg
          = "There already exists a top level corpus with the name: " + corpusName;
        throw new ConflictingCorpusException(msg);
      }
    }
docs: Checks, if a already exists a corpus with the same name of the top level
  corpus in the corpus.tab file. If this is the case an Exception is thrown
  and the import is aborted.
  
  @throws
  annis.administration.DefaultAdministrationDao.ConflictingCorpusException