Visit Observation
data class VisitObservation(var url: Url, var title: String? = null, var visitType: VisitType?, var isError: Boolean? = null, var isRedirectSource: Boolean? = null, var isPermanentRedirectSource: Boolean? = null, var at: PlacesTimestamp? = null, var referrer: Url? = null, var isRemote: Boolean? = null, var previewImageUrl: Url? = null)
Encapsulates either information about a visit to a page, or meta information about the page, or both. Use VisitType.UPDATE_PLACE to differentiate an update from a visit.