 class Net8b7c:f320:99b9:690f:4595:cd17:293a:c069HTTPUpgradeRequired 

Parent:
Net8b7c:f320:99b9:690f:4595:cd17:293a:c069HTTPClientError
  425 Unordered Collection - existed only in draft     Constants   HAS_BODY 
  

    Ruby Core © 1993–2017 Yukihiro MatsumotoLicensed under the Ruby License.Ruby Standard Library 
{'path': 'public/docs/ruby~2.6/net/httpupgraderequired.html', 'source': 'DevDocs.IO'}