docstr: Configs can be constructed by specifying values by keyword.
  If a keyword is supplied that isn't in the config, or if a config requires
  a value that isn't specified and doesn't have a default, a TypeError will be
  raised.
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code: def __init__(self, **kwargs):
      """Configs can be constructed by specifying values by keyword.
      If a keyword is supplied that isn't in the config, or if a config requires
      a value that isn't specified and doesn't have a default, a TypeError will be
      raised."""
      specified = kwargs.keys() | type(self)._field_defaults.keys()
      required = type(self).__annotations__.keys()
      # Unspecified fields have no default and weren't provided by the caller
      unspecified_fields = required - specified
      if unspecified_fields:
          raise TypeError(
              f"Failed to specify {unspecified_fields} for {type(self)}"
          )
  
      # Overspecified fields are fields that were provided but that the config
      # doesn't know what to do with, ie. was never specified anywhere.
      overspecified_fields = specified - required
      if overspecified_fields:
          raise TypeError(
              f"Specified non-existent fields {overspecified_fields} for {type(self)}"
          )
  
      vars(self).update(kwargs)
  
imports: from collections import OrderedDict
  from typing import Any, List, Optional, Union
label_desc: Use image node_id 4 to create a new ConfigBase object  with example: obj = ConfigBase()