docs: def _read_configuration_file(self, config_filename):
          """
          Reads parameters from the configuration file.
  
          :param str config_filename: The name of the configuration file.
          """
          config = configparser.ConfigParser()
          config.read(config_filename)
  
          self._parent_class_name = config.get('wrapper', 'parent_class')
          self._parent_class_namespace = config.get('wrapper', 'parent_class_namespace')
          self._wrapper_class_name = config.get('wrapper', 'wrapper_class')
          self._wrapper_filename = config.get('wrapper', 'wrapper_file')
          self._metadata_filename = config.get('wrapper', 'metadata')
          self._lob_as_string_flag = config.get('wrapper', 'lob_as_string')