docstring parsing doesn't work if you have inheritance in class based view

[well2life]

I'm trying to use inheritance in my class based view:

from aiohttp import web
from aiohttp_swagger3 import SwaggerDocs, SwaggerUiSettings


class BaseApi(web.View):
    async def get(self):
        return web.json_response(data={'called_method': 'GET'})

    async def post(self):
        return web.json_response(data={'called_method': 'POST'})

    async def put(self):
        return web.json_response(data={'called_method': 'PUT'})

    async def patch(self):
        return web.json_response(data={'called_method': 'PATCH'})


class SomeApi(BaseApi):
    def some_stuff(self):
        pass

    async def get(self):
        """
        ---
        summary: Some GET method
        responses:
          '200':
            description: OK.
        """
        self.some_stuff()
        return await super().get()


app = web.Application()

swagger = SwaggerDocs(
        app,
        swagger_ui_settings=SwaggerUiSettings(path="/api/v1.0.0/docs/"),
        title="Proto",
        version="1.0.0",
    )

swagger.add_routes([
        web.view('/api/some_api', SomeApi, name="some_api"),
    ])

web.run_app(app, host="127.0.0.1")

But I receive next exception:

File "lib/site-packages/aiohttp_swagger3/swagger_route.py", line 36, in _get_fn_parameters
    if func.__closure__ is None:
AttributeError: type object 'SomeApi' has no attribute '__closure__'