com.atlassian.confluence.user
Interfaces 
DisabledUserManager
PersonalInformationManager
SearchEntitiesManager
UserAccessor
UserContentManager
UserDetailsManager
UserProfilePictureManager
Classes 
AuthenticatedUserThreadLocal
AuthenticatorOverwrite
ConfigurableMappingResources
ConfluenceAuthenticator
ConfluenceCrowdSSOAuthenticator
ConfluenceGroupJoiningAuthenticator
ConfluenceHibernateAccessor
ConfluenceLDAPCredentialsProvider
ConfluenceLDAPGroupJoiningAuthenticator
ConfluencePropertySetFactory
ConfluenceUserPreferences
DarkFeatureEnabledCondition
DefaultPersonalInformationManager
DefaultSearchEntitiesManager
DefaultUserAccessor
DefaultUserContentManager
DefaultUserDetailsManager
DefaultUserProfilePictureManager
HibernateUserProviderFactory
PermittedUserFinder
PermittedUserFinder.SearchResult
PersonalInformation
SessionKeys
ThreadLocalProfilePictureCache
UnknownUser
UserCacheFillerJob
UserConfigurationChecker
UserInterfaceState
UsernameToUserTranslatingPaginationSupport
UserPickerFilter
UserPreferencesKeys
Exceptions 
UserManagementOperationFailedException