code: def __repr__(self) -> str:
      on = self.online_networks
      if len(on) == 0:
          return "(no gateways online - try syft.gateways.all_gateways to see offline gateways)"
      return pd.DataFrame(on).to_string()
  
imports: from __future__ import annotations
  from concurrent import futures
  from typing import Any
  from typing import Dict
  from typing import List
  from typing import Optional
  from typing import TYPE_CHECKING
  from typing import Tuple
  from typing import Union
  import pandas
  import requests
  from ..service.metadata.node_metadata import NodeMetadataJSON
  from ..service.network.network_service import NodePeer
  from ..service.response import SyftException
  from ..types.grid_url import GridURL
  from ..util.constants import DEFAULT_TIMEOUT
  from ..util.logger import error
  from ..util.logger import warning
  from .enclave_client import EnclaveClient
label_desc: Use image node_id 4 for calling the NetworkRegistry obj's underlying member method code with example usage: obj.__repr__() and returns: pd, str