com.atlassian.jira.user
Interfaces 
ApplicationUser
AutoGroupAdder
ExternalEntityStore
SecureUserTokenManager
UserAdminHistoryManager
UserDeleteVeto
UserHistoryManager
UserHistoryStore
UserIssueHistoryManager
UserIssueSearcherHistoryManager
UserKeyService
UserProjectHistoryManager
UserPropertyManager
UserQueryHistoryManager
Classes 
ApplicationUserEntity
ApplicationUsers
AutoGroupAdderImpl
CachingExternalEntityStore
CachingUserHistoryStore
DefaultSecureUserTokenManager
DefaultUserAdminHistoryManager
DefaultUserHistoryManager
DefaultUserIssueHistoryManager
DefaultUserIssueSearcherHistoryManager
DefaultUserProjectHistoryManager
DefaultUserPropertyManager
DefaultUserQueryHistoryManager
DelegatingApplicationUser
MockApplicationUser
MockCrowdDirectoryService
MockCrowdService
MockGroup
MockUser
MockUserDeleteVeto
MockUserKeyService
OfbizExternalEntityStore
OfBizUserHistoryStore
SessionBasedAnonymousUserHistoryStore
UserDeleteVetoImpl
UserHistoryItem
UserHistoryItem.Type
UserKeyServiceImpl
UserSet
UserUtils
Enums 
SecureUserTokenManager.TokenType