Function expand_func

mypy/checker.py:8996–9000

(defn: FuncItem, map: dict[TypeVarId, Type])

def expand_func(defn: FuncItem, map: dict[TypeVarId, Type]) -> FuncItem:
    visitor = TypeTransformVisitor(map)
    ret = visitor.node(defn)
    assert isinstance(ret, FuncItem)
    return ret


class TypeTransformVisitor(TransformVisitor):