code: def _separate_paths(self, remote_path):
      hostname, port_sub_path = remote_path.rsplit(":", maxsplit=1)
      try:
          port, sub_path = port_sub_path.split("/", maxsplit=1)
      except ValueError:  # no sub_path specified
          port = port_sub_path
          sub_path = ""
      self._remote_path = f"{hostname}:{port}"
      self._sub_path = sub_path
  
imports: import logging
  import os
  import threading
  import uuid
  import weakref
  from collections import defaultdict
  from copy import deepcopy
  from typing import Tuple
  import aim.ext.transport.proto.remote_tracking_pb2
  import aim.ext.transport.proto.remote_router_pb2
  import aim.ext.transport.proto.remote_tracking_pb2_grpc
  import aim.ext.transport.proto.remote_router_pb2_grpc
  from aim.ext.transport.message_utils import pack_stream, unpack_stream, raise_exception
  from aim.ext.transport.rpc_queue import RpcQueueWithRetry
  from aim.ext.transport.heartbeat import RPCHeartbeatSender
  from aim.ext.transport.config import AIM_CLIENT_SSL_CERTIFICATES_FILE, AIM_RT_MAX_MESSAGE_SIZE, AIM_RT_DEFAULT_MAX_MESSAGE_SIZE, AIM_CLIENT_QUEUE_MAX_MEMORY
  from aim.storage.treeutils import encode_tree, decode_tree
label_desc: Use image node_id 2 for calling the Client obj's underlying member method code with example usage: obj._separate_paths(remote_path) without return types