`TActivity`
pl		access
pl		actor
pl		address
pl		annotation
pl		crosspostSource
pl		etag
pl		geocode
pl		id
pl		kind
pl		location
pl		_object
pl		placeId
pl		placeName
pl		provider
pl		_published
pl		radius
pl		title
pl		updated
pl		url
pl		verb

`TGoogleBaseObject`