| Classes AllSelectionsHaveAttribute
 AlwaysEnabled
 AnySelectionHasAttribute
 ContextHasElement
 ContextHasNode
 ContextHasProject
 ContextHasView
 ContextHasWorkspace
 ContextObjectIsNamed
 ElementHasAttribute
 ExtensionEnabled
 ExtensionInitialized
 MultipleSelection
 NodeIsDirty
 ProductHasId
 ProjectHasContent
 ProjectHasTechScope
 ProjectPropertiesHasKey
 PropertyHasValue
 SingleSelection
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