code: def set_is_base(info: TypeInfo) -> None:
      _set_info_metadata(info, "is_base", True)
  
imports: from __future__ import annotations
  import re
  from typing import Any
  from typing import Iterable
  from typing import Iterator
  from typing import List
  from typing import Optional
  from typing import overload
  from typing import Tuple
  from typing import Type
  from typing import TypeVar
  from typing import Union
  from mypy import version
  from mypy.messages import format_type
  from mypy.nodes import CallExpr
  from mypy.nodes import ClassDef
  from mypy.nodes import CLASSDEF_NO_INFO
  from mypy.nodes import Context
  from mypy.nodes import Expression
  from mypy.nodes import FuncDef
  from mypy.nodes import IfStmt
  from mypy.nodes import JsonDict
  from mypy.nodes import MemberExpr
  from mypy.nodes import NameExpr
  from mypy.nodes import Statement
  from mypy.nodes import SymbolTableNode
  from mypy.nodes import TypeAlias
  from mypy.nodes import TypeInfo
  from mypy.options import Options
  from mypy.plugin import ClassDefContext
  from mypy.plugin import DynamicClassDefContext
  from mypy.plugin import SemanticAnalyzerPluginInterface
  from mypy.plugins.common import deserialize_and_fixup_type
  from mypy.typeops import map_type_from_supertype
  from mypy.types import CallableType
  from mypy.types import get_proper_type
  from mypy.types import Instance
  from mypy.types import NoneType
  from mypy.types import Type
  from mypy.types import TypeVarType
  from mypy.types import UnboundType
  from mypy.types import UnionType
label_desc: Use image node_id 6 for calling a global function with example usage: set_is_base(info) without return types