code: def test_call_find_unexpected_errors_if_feature_enabled(
      self,
      mock_find_unexpected_errors,
      mock_firefox,
      mock_webdriver_wait,
  ):
      app.config["SCREENSHOT_REPLACE_UNEXPECTED_ERRORS"] = True
      webdriver_proxy = WebDriverSelenium("firefox")
      user = security_manager.get_user_by_username(
          app.config["THUMBNAIL_SELENIUM_USER"]
      )
      url = get_url_path("Superset.dashboard", dashboard_id_or_slug=1)
      webdriver_proxy.get_screenshot(url, "grid-container", user=user)
  
      assert mock_find_unexpected_errors.called
  
      app.config["SCREENSHOT_REPLACE_UNEXPECTED_ERRORS"] = False
  
imports: import json
  import urllib.request
  from io import BytesIO
  from unittest import skipUnless
  from unittest.mock import ANY, call, MagicMock, patch
  import pytest
  from flask_testing import LiveServerTestCase
  from sqlalchemy.sql import func
  from superset import db, is_feature_enabled, security_manager
  from superset.extensions import machine_auth_provider_factory
  from superset.models.dashboard import Dashboard
  from superset.models.slice import Slice
  from superset.tasks.types import ExecutorType
  from superset.utils.screenshots import ChartScreenshot, DashboardScreenshot
  from superset.utils.urls import get_url_path
  from superset.utils.webdriver import WebDriverSelenium
  from tests.integration_tests.conftest import with_feature_flags
  from tests.integration_tests.fixtures.birth_names_dashboard import load_birth_names_dashboard_with_slices, load_birth_names_data
  from tests.integration_tests.test_app import app
  from .base_tests import SupersetTestCase
label_desc: Use image node_id 2 for calling the TestWebDriverScreenshotErrorDetector obj's underlying member method code with example usage: obj.test_call_find_unexpected_errors_if_feature_enabled(mock_find_unexpected_errors, mock_firefox, mock_webdriver_wait) without return types