class_docstr: DocProto implementation for internal use.
class_docstr_tok: ["DocProto","implementation","for","internal","use","."]
code: def __iter__(self) -> Iterator["Token"]:
      tokens = unwrap(self.tokens)
      for token in tokens:
          yield token
  
imports: from dataclasses import dataclass, field
  from typing import Any, Dict, Iterator, List, Optional, TypeVar
  from typing_extensions import Protocol, runtime_checkable
label_desc: Use image node_id 4 for calling the Doc obj's underlying member method code with example usage: obj.__iter__() without return types