quote do
vapid_details = Application.get_env(:web_push_encryption, :vapid_details, [])
Application.put_env(:web_push_encryption, :vapid_details, [])
quote do
vapid_details = Application.get_env(:web_push_encryption, :vapid_details, [])
Application.put_env(:web_push_encryption, :vapid_details, [])