keyByGroundOverlayId function
Converts an Iterable of GroundOverlays in a Map of GroundOverlayId -> GroundOverlay.
Implementation
Map<GroundOverlayId, GroundOverlay> keyByGroundOverlayId(Iterable<GroundOverlay> groundOverlays) {
return keyByMapsObjectId<GroundOverlay>(groundOverlays).cast<GroundOverlayId, GroundOverlay>();
}