in app/com/gu/viewer/proxy/PreviewSession.scala [10:21]
def asCookies: Seq[Cookie] = Seq(
authCookie.map(Cookie(PreviewSession.COOKIE_PREVIEW_AUTH, _)),
sessionCookie.map(Cookie(PreviewSession.COOKIE_PREVIEW_SESSION, _))
).flatten
def asSessionPairs: Seq[(String, Option[String])] = {
import PreviewSession._
Seq(
SESSION_KEY_PREVIEW_SESSION -> sessionCookie,
SESSION_KEY_PREVIEW_AUTH -> authCookie,
SESSION_KEY_RETURN_URL -> returnUrl)
}