docs: def is_tracking_shield_displayed(self):
          """Tracking Protection shield.
  
          Returns:
              bool: True or False if the Tracking Shield is displayed.
  
          """
          with self.selenium.context(self.selenium.CONTEXT_CHROME):
              if self.window.firefox_version >= 63:  # Bug 1471713, 1476218
                  el = self.root.find_element(*self._tracking_protection_shield_locator)
                  return el.get_attribute("active") is not None
              el = self.root.find_element(By.ID, "tracking-protection-icon")
              return bool(el.get_attribute("state"))