[Python] How use @multimethod and Self tohether in python?

Consider the code:

from enum import Enum, auto
from typing import Self
from typing import List

from multipledispatch import dispatch
from multimethod import multimethod


class Name:
__id: list[str]

def __new__(self, id: list[str]):
self.__id = id

# ...

@multimethod
def prefix(self, other: Self) -> Self:
return self.prefix(other.__id)

# EXCEPTION HERE
@multimethod
def prefix(self, prefix: List[str]) -> Self:
return Name(prefix + self.__id)

@multimethod
def postfix(self, postfix: List[str]) -> Self:
return Name(self.__id + postfix)


Error stack is

Traceback (most recent call last):
File "myfolder\app.py", line 6, in <module>
from my_package import MyClass
File "myfolder\__init__.py", line 13, in <module>
class Name:
File "myfolder\__init__.py", line 50, in Name
@multimethod
^^^^^^^^^^^
File "myfolder\.venv\Lib\site-packages\multimethod\__init__.py", line 257, in __init__
self[signature.from_hints(func)] = func
~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "myfolder\.venv\Lib\site-packages\multimethod\__init__.py", line 299, in __setitem__
parents = types.parents = self.parents(types)
^^^^^^^^^^^^^^^^^^^
File "myfolder\.venv\Lib\site-packages\multimethod\__init__.py", line 282, in parents
parents = {key for key in list(self) if isinstance(key, signature) and key < types}
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "myfolder\.venv\Lib\site-packages\multimethod\__init__.py", line 282, in <setcomp>
parents = {key for key in list(self) if isinstance(key, signature) and key < types}
^^^^^^^^^^^
File "myfolder\.venv\Lib\site-packages\multimethod\__init__.py", line 221, in __lt__
return self != other and self <= other
^^^^^^^^^^^^^
File "myfolder\.venv\Lib\site-packages\multimethod\__init__.py", line 218, in __le__
return self.required <= len(other) and all(map(issubclass, other, self))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\work\tools\Python\Python3.11.3\Lib\typing.py", line 466, in __subclasscheck__
raise TypeError(f"{self} cannot be used with issubclass()")
TypeError: typing.Self cannot be used with issubclass()


Why this happended? May I use Self return type with @multimethod?

Python version 3.11.3

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