public class SerializableHttpCookie
extends java.lang.Object
implements java.io.Serializable
from http://stackoverflow.com/questions/25461792/persistent-cookie-store-using-okhttp-2-on-android
and
http://www.geebr.com/post/okHttp3%E4%B9%8BCookies%E7%AE%A1%E7%90%86%E5%8F%8A%E6%8C%81%E4%B9%85%E5%8C%96