code: def write_journal(self, journal_file_path):
          
          # TODO: assert the extension is txt and not other
          with open(journal_file_path, "w") as jrn_file:
              jrn_file.write(self._journal_contents)
docs: Write the constructed journal in to the provided file.
  
          Args:
              journal_file_path (str): full path to output journal file