-- | If the task fails, a description of the error.
btBundleTaskError :: Lens' BundleTask (Maybe BundleTaskError)
btBundleTaskError =
    lens _btBundleTaskError (\s a -> s { _btBundleTaskError = a })
btBundleTaskError :: Lens' BundleTask (Maybe BundleTaskError)
btBundleTaskError =
    lens _btBundleTaskError (\s a -> s { _btBundleTaskError = a })
btBundleTaskError =
    lens _btBundleTaskError (\s a -> s { _btBundleTaskError = a })