Пространство имен Bitrix\Main\Update

Структуры данных
class	AdminFilterOption
class	AdminGridOption
class	EO_VersionHistory
class	EO_VersionHistory_Collection
class	EO_VersionHistory_Entity
class	EO_VersionHistory_Query
class	EO_VersionHistory_Result
class	Stepper
class	UserSelectorStepper
class	UserStepper
class	VersionHistoryTable