code: def to_state(self):
      children = []
      for c in self.connectors:
          state = c.to_state()
          assert isinstance(state, tuple) and len(state) == 2, (
              "Serialized connector state must be in the format of "
              f"Tuple[name: str, params: Any]. Instead we got {state}"
              f"for connector {c.__name__}."
          )
          children.append(state)
      return AgentConnectorPipeline.__name__, children
  
file_path: ray/rllib/connectors/agent/pipeline.py
imports: import logging
  from typing import Any, List
  from collections import defaultdict
  from ray.rllib.connectors.connector import AgentConnector, Connector, ConnectorContext, ConnectorPipeline
  from ray.rllib.connectors.registry import get_connector, register_connector
  from ray.rllib.utils.typing import ActionConnectorDataType, AgentConnectorDataType
  from ray.util.annotations import PublicAPI
  from ray.util.timer import _Timer
label_desc: Use image node_id 5 for calling the AgentConnectorPipeline obj's underlying member method code with example usage: obj.to_state() and returns: AgentConnectorPipeline,  children