class_docstr: Contains the metadata request info of a consumer.
  
  Instances of `MethodMetadataRequest` are used in this class for each
  available method under `metadatarequest.{method}`.
  
  Consumer-only classes such as simple estimators return a serialized
  version of this class as the output of `get_metadata_routing()`.
  
  .. versionadded:: 1.3
  
  Parameters
  ----------
  owner : str
      The name of the object to which these requests belong.
code: def __init__(self, owner):
      for method in METHODS:
          setattr(
              self,
              method,
              MethodMetadataRequest(owner=owner, method=method),
          )
  
imports: import inspect
  from collections import namedtuple
  from copy import deepcopy
  from typing import Optional, Union
  from warnings import warn
  from ..None import get_config
  from ..exceptions import UnsetMetadataPassedError
  from ._bunch import Bunch
label_desc: Use image node_id 1 to create a new MetadataRequest object  with example: obj = MetadataRequest(owner)