Deprecated symbols Review unsupported symbols and their replacements. TopicsDeprecated propertiesfriendsDeprecated methodsauthenticate(completionHandler:)generateIdentityVerificationSignature(completionHandler:)loadDefaultLeaderboardCategoryID(completionHandler:)loadFriendPlayers(completionHandler:)loadFriendsObsoleted(completionHandler:)setDefaultLeaderboardCategoryID(_:completionHandler:)