@exportClass ol.Overlay ol.OverlayOptions

@exportSymbol ol.OverlayPositioning
@exportProperty ol.OverlayPositioning.BOTTOM_LEFT
@exportProperty ol.OverlayPositioning.BOTTOM_CENTER
@exportProperty ol.OverlayPositioning.BOTTOM_RIGHT
@exportProperty ol.OverlayPositioning.CENTER_LEFT
@exportProperty ol.OverlayPositioning.CENTER_CENTER
@exportProperty ol.OverlayPositioning.CENTER_RIGHT
@exportProperty ol.OverlayPositioning.TOP_LEFT
@exportProperty ol.OverlayPositioning.TOP_CENTER
@exportProperty ol.OverlayPositioning.TOP_RIGHT