`TActivityTypeobject`
pt		Setactor
pt		Setattachments
pt		Setcontent
pt		Setid
pt		SetobjectType
pt		SetoriginalContent
pt		Setplusoners
pt		Setreplies
pt		Setresharers
pt		SetstatusForViewer
pt		Seturl

`TGoogleBaseObject`
		AllowAdditionalProperties