I add layers to my map and the mapview takes on the extent of the first layer added. I cannot pan to any other layers added due to being constrained to the extent of the first layer added. How do I expand my extent? Do I need to do this programatically by taking the min and max of all extents and then setting the new mapview extent. I did try changing the extent after it was set by the first layer using setExtent on mapview, but it did nothing.