class_docstr: Raised when a module tries to register a configuration option that
  already exists.
  
  Should not be raised too much really, only when developing new fontTools
  modules.
class_docstr_tok: ["Raised","when","a","module","tries","to","register","a","configuration","option","that","already","exists",".","Should","not","be","raised","too","much","really",",","only","when","developing","new","fontTools","modules","."]
code: def __init__(self, name):
      super().__init__(f"Config option {name} is already registered.")
  
imports: from __future__ import annotations
  import logging
  from dataclasses import dataclass
  from typing import Any, Callable, ClassVar, Dict, Iterable, Mapping, MutableMapping, Optional, Set, Union
label_desc: Use image node_id 1 to create a new ConfigAlreadyRegisteredError object from inherited base classes: ConfigError with example: obj = ConfigAlreadyRegisteredError(name)