Perhaps a better way to see if there is a valid CALayerTree.
Perhaps a better way to see if there is a valid CALayerTree.

seltzered/SVGKit,MaddTheSane/SVGKit,seltzered/SVGKit,MaddTheSane/SVGKit,MaddTheSane/SVGKit,MaddTheSane/SVGKit,seltzered/SVGKit,seltzered/SVGKit,seltzered/SVGKit,MaddTheSane/SVGKit,seltzered/SVGKit