code: def get_screenshot(
      self, user: User, window_size: WindowSize | None = None
  ) -> bytes | None:
      driver = self.driver(window_size)
      self.screenshot = driver.get_screenshot(
          self.url, self.element, user
      )
      return self.screenshot
  
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 4 for calling the BaseScreenshot obj's underlying member method code with example usage: obj.get_screenshot(user, window_size) and returns: self