B008: extend-immutable-calls does not work with imported function

I have small framework, which has Depends function simialr to fastapi feature. In my projects I want flake8-bubear to ignore only this funcion, but not any other function with same name. I've tried to set full link in flake config, but it does not work.
I know that it is possible to always use full function name, but it looks dirty:

Example 1. Correct behavior - no B008
In config:

extend-immutable-calls=myapp.api.lambda_handler.depends.Depends

In code

import myapp.api.lambda_handler.depends

@app.handler
def get_data(
        session: Session = myapp.api.lambda_handler.depends.Depends(),
) -> HttpResponse[ListResponse[AA]]:

Example 2. Incorrect behavior - B008
In config:

extend-immutable-calls=myapp.api.lambda_handler.depends.Depends

In code

from myapp.api.lambda_handler.depends import Depends

@app.handler
def get_data(
        session: Session = Depends(),
) -> HttpResponse[ListResponse[AA]]:

Example 3. Incorrect behavior - no B008

extend-immutable-calls=Depends

from myapp.api.lambda_handler.depends import Depends

@app.handler
def get_data(
        session: Session = Depends(),
) -> HttpResponse[ListResponse[AA]]:
    ...

def Depends(): 
    return []

@app.handler
def put_data(
        session: Session = Depends(),
) -> HttpResponse[ListResponse[AA]]:

Reproduce the three configuration and import examples from the issue, then trace the B008 handling for configured call names and imported functions. Add regression coverage showing that a fully qualified configured name matches the imported Depends call while an unrelated local Depends remains flagged; done when the examples produce the stated results.