code: def __getitem__(self, type_name: str):
      return self._registry[type_name]
  
file_path: aim/aim/ext/transport/remote_tracking.py
imports: from typing import Dict, Union
  import aim.ext.transport.proto.remote_tracking_pb2
  import aim.ext.transport.proto.remote_tracking_pb2_grpc
  import aim.ext.transport.message_utils
  from aim.ext.transport.handlers import get_handler
  from aim.storage.treeutils import encode_tree, decode_tree
label_desc: Use image node_id 3 for calling the ResourceTypeRegistry obj's underlying member method code with example usage: obj.__getitem__(type_name) and returns: self