code: def __call__(self, driver):
      try:
          elem = driver.find_element(By.CSS_SELECTOR, self.selector)
          classname = elem.get_attribute("class")
          logger.debug(
              "contains class {%s} => expected %s",
              classname,
              self.classname,
          )
          return self.classname in str(classname).split(" ")
      except WebDriverException:
          return False
  
imports: import time
  import logging
  from selenium.common.exceptions import WebDriverException
  from selenium.webdriver.common.by import By
  from dash.testing.errors import TestingTimeoutError
label_desc: Use image node_id 2 for calling the contains_class obj's underlying member method code with example usage: obj.__call__(driver) and returns: unknown, False