code: def driver(self, window_size: WindowSize | None = None) -> WebDriver:
      window_size = window_size or self.window_size
      if feature_flag_manager.is_feature_enabled(
          "PLAYWRIGHT_REPORTS_AND_THUMBNAILS"
      ):
          return WebDriverPlaywright(self.driver_type, window_size)
      return WebDriverSelenium(self.driver_type, window_size)
  
imports: from __future__ import annotations
  import logging
  from io import BytesIO
  from typing import TYPE_CHECKING
  from flask import current_app
  from superset import feature_flag_manager
  from superset.utils.hashing import md5_sha_from_dict
  from superset.utils.urls import modify_url_query
  from superset.utils.webdriver import ChartStandaloneMode, DashboardStandaloneMode, WebDriver, WebDriverPlaywright, WebDriverSelenium, WindowSize
label_desc: Use image node_id 2 for calling the BaseScreenshot obj's underlying member method code with example usage: obj.driver(window_size) and returns: WebDriverSelenium, WebDriverPlaywright