`TActivityContentDetails`
pt		Setbulletin
pt		SetchannelItem
pt		Setcomment
pt		Setfavorite
pt		Setlike
pt		SetplaylistItem
pt		SetpromotedItem
pt		Setrecommendation
pt		Setsocial
pt		Setsubscription
pt		Setupload

`TGoogleBaseObject`
		AllowAdditionalProperties