extent

Calculate and return the extent of the graphics contained in the overlay's graphics collection. The extent's spatial reference is that of the GeoView that contains the overlay. If the overlay is not in a view, returns null. If the overlay is in a view but that view does not yet have a spatial reference, returns null. If the overlay is in a view with a spatial reference, but has no graphics, then an empty envelope will be returned.

Since

200.1.0