code: def _find_joliet_record(self, joliet_path):
          # type: (bytes) -> dr.DirectoryRecord
          '''
          An internal method to find an directory record on the ISO given a Joliet
          path.  If the entry is found, it returns the directory record object
          corresponding to that entry.  If the entry could not be found, a
          pycdlibexception.PyCdlibInvalidInput is raised.
  
          Parameters:
           joliet_path - The Joliet path to lookup.
          Returns:
           The directory record entry representing the entry on the ISO.
          '''
          if self.joliet_vd is None:
              raise pycdlibexception.PyCdlibInternalError('Joliet path requested on non-Joliet ISO')
          return _find_dr_record_by_name(self.joliet_vd, joliet_path, 'utf-16_be'f _find_joliet_record(self, joliet_path):
          # type: (bytes) -> dr.DirectoryRecord
          '''
          An internal method to find an directory record on the ISO given a Joliet
          path.  If the entry is found, it returns the directory record object
          corresponding to that entry.  If the entry could not be found, a
          pycdlibexception.PyCdlibInvalidInput is raised.
  
          Parameters:
           joliet_path - The Joliet path to lookup.
          Returns:
           The directory record entry representing the entry on the ISO.
          '''
          if self.joliet_vd is None:
              raise pycdlibexception.PyCdlibInternalError('Joliet path requested on non-Joliet ISO')
          return _find_dr_record_by_name(self.joliet_vd, joliet_path, 'utf-16_be')
docs: An internal method to find an directory record on the ISO given a Joliet
          path.  If the entry is found, it returns the directory record object
          corresponding to that entry.  If the entry could not be found, a
          pycdlibexception.PyCdlibInvalidInput is raised.
  
          Parameters:
           joliet_path - The Joliet path to lookup.
          Returns:
           The directory record entry representing the entry on the ISO.