Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 12345]

▼NMediaWiki
▼NExtension
▼NWikiLambda
►NActionAPI
CApiFunctionCall
CApiPerformTest
CApiQueryZFunctionReference
CApiQueryZObjectLabels
CApiQueryZObjects
CApiSupportedProgrammingLanguages
CApiZObjectEditor
CApiZObjectFetcher
CWikiLambdaApiBase	WikiLambda Base API util
CWikiLambdaApiQueryGeneratorBase	WikiLambda Query Generator Base API util
►NAuthorization
CAuthorizationStatus
CZObjectAuthorization
CZObjectFilter
CZObjectFilterInRange
CZObjectFilterIsAttached
CZObjectFilterIsConnectedConverter
CZObjectFilterIsEnumValue
CZObjectFilterIsRunnable
CZObjectFilterTypeChanged
►NDiff
CDiffMatrix
CZObjectContentDifferenceEngine
CZObjectDiffer
CZObjectListDiffer
CZObjectMapDiffer
CZObjectSlotDiffRenderer
►NFields
CHTMLZLanguageSelectField
CHTMLZTypeSelectField
►NHookHandler
CClientHooks
CPageEditingHandler
CPageRenderingHandler
►NJobs
CCacheTesterResultsJob	Asynchronous job to write out the results of a function tester run to the database, which allows us to avoid a database write on an API GET
CUpdateImplementationsJob
►NPagers
CZObjectAlphabeticPager
►NPublicAPI
CPublicApiRun
►NRegistry
CZErrorTypeRegistry	A registry service for ZErrorType
CZLangRegistry	A registry service for ZLanguage and language codes
CZObjectRegistry
CZTypeRegistry	A registry service for ZObject implementations
►NRESTAPI
CFetchHandler	Simple REST API to fetch the latest versions of one or more ZObjects via GET /wikifunctions/v0/fetch/{zids}
►NSpecial
CDuplicateObjectLabelsPager
CSpecialCreateObject
CSpecialListDuplicateObjectNames
CSpecialListFunctionsByTests
CSpecialListMissingLabels
CSpecialListObjectsByType
CSpecialRunFunction
CSpecialViewObject
►NZObjects
CStringForLanguageBuilder	Builder of a string for a certain language
CZBoolean
CZError
CZFunction
CZFunctionCall
CZKey
CZKeyReference
CZMonoLingualString
CZMonoLingualStringSet
CZMultiLingualString
CZMultiLingualStringSet
CZObject
CZPersistentObject
CZQuote
CZReference
CZResponseEnvelope
CZString
CZType
CZTypedError
CZTypedList
CZTypedMap
CZTypedPair
CHooks
COrchestratorRequest	@codeCoverageIgnore
CWikiLambdaServices	@codeCoverageIgnore
CZErrorException
CZErrorFactory
CZObjectContent	This class represents the wrapper for a ZObject, as stored in MediaWiki
CZObjectContentHandler
CZObjectEditAction
CZObjectFactory
CZObjectHistoryAction
CZObjectPage
CZObjectSecondaryDataRemoval
CZObjectSecondaryDataUpdate
CZObjectStore
CZObjectUtils
▼NExtensions
▼NWikiLambda
►NMaintenance
CMigrateZ16K1StringsToZ61s
CUpdateSecondaryTables
CLoadJsonDump
CLoadPreDefinedObject