Wording in `mypy.plugin.Plugin.get_method[_signature]_hook` docstring

Documentation

The docstring of these plugin hook methods currently say:

https://github.com/python/mypy/blob/057508b4cb405fbc22e26b44f764b142352fcce5/mypy/plugin.py#L647-L648

...

https://github.com/python/mypy/blob/057508b4cb405fbc22e26b44f764b142352fcce5/mypy/plugin.py#L664

I understand this to mean that the argument to fullname will be "__main__.Base.method", because __main__.Base defines method.

However, this doesn't seem to be the case. Setting up the same example in the docstring:

• mypy.ini

  [mypy]
  plugins = plugin.py
  files = test.py
  

• plugin.py

  from mypy.plugin import Plugin
  
  def plugin(version):
      return TestPlugin
  
  class TestPlugin(Plugin):
      def get_method_signature_hook(self, fullname):
          if fullname.startswith("test."):
              print(f"Hook will be called with `{fullname}`")
  

• test.py

  from typing import Any
  
  class Base:
      def method(self, arg: Any) -> Any: ...
  
  class Derived(Base): ...
  
  var: Derived
  var.method(42)
  

$ mypy
Hook will be called with `test.Derived.method`

I installed as far back as mypy 0.9x and it was the same behaviour as described above, displaying test.Derived.method (not test.Base.method).

Is there something wrong with the docstring (perhaps from outdated behaviour that no longer applies), or have I misunderstood something?

Beginne mit den verknüpften Hook-Docstrings in mypy/plugin.py um die Zeilen 647-648 und 664 und reproduziere anschließend das bereitgestellte Beispiel mit mypy.ini, plugin.py und test.py. Vergleiche den dokumentierten fullname mit dem beobachteten Wert test.Derived.method; die Arbeit ist abgeschlossen, wenn der Docstring das Hook-Argument korrekt erklärt oder das gemeldete Missverständnis aufgeklärt ist.