docs: def update_check(package_name, package_version, bypass_cache=False, url=None,
                   **extra_data):
      """Convenience method that outputs to stdout if an update is available."""
      checker = UpdateChecker(url)
      checker.bypass_cache = bypass_cache
      result = checker.check(package_name, package_version, **extra_data)
      if result:
          print(result)