-- | RFC 3339 date-time when this Page was last updated.
pagUpdated :: Lens' Page (Maybe UTCTime)
pagUpdated
  = lens _pagUpdated (\ s a -> s{_pagUpdated = a}) .
      mapping _DateTime
pagUpdated :: Lens' Page (Maybe UTCTime)
pagUpdated
  = lens _pagUpdated (\ s a -> s{_pagUpdated = a}) .
      mapping _DateTime
pagUpdated
  = lens _pagUpdated (\ s a -> s{_pagUpdated = a}) .
      mapping _DateTime