docs: def bootstrap(self, config):
          """ Initialize a new node from scratch and start it. """
          pg_hba = config.get('pg_hba', [])
          method = config.get('method') or 'initdb'
          self._running_custom_bootstrap = method != 'initdb' and method in config and 'command' in config[method]
          if self._running_custom_bootstrap:
              do_initialize = self._custom_bootstrap
              config = config[method]
          else:
              do_initialize = self._initdb
          return do_initialize(config) and self.append_pg_hba(pg_hba) and self.save_configuration_files() \
              and self._configure_server_parameters() and self.start()