{:link, [ref: h.(activity.data["context"]), rel: 'ostatus:conversation'], []},
{:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])], []},
{:"thr:in-reply-to", [ref: to_charlist(activity.data["object"])], []}
{:link, [ref: h.(activity.data["context"]), rel: 'ostatus:conversation'], []},
{:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])], []},
{:"thr:in-reply-to", [ref: to_charlist(activity.data["object"])], []}