code: def test_spec_bypass_methods(app):
      class Foo:
          def bar(self):
              pass
  
      app.add_url_rule("/foo", "foo", Foo().bar)
  
      spec = app._get_spec()
      assert "/foo" not in spec["paths"]
  
imports: import json
  import pytest
  from flask import request
  from openapi_spec_validator import validate_spec
  from .schemas import Bar
  from .schemas import Baz
  from .schemas import Foo
  from apiflask import APIBlueprint
  from apiflask import Schema
  from apiflask.commands import spec_command
  from apiflask.fields import Integer
label_desc: Use image node_id 7 for calling a global function with example usage: test_spec_bypass_methods(app) without return types