SceneModel populated with one object per emitted group / element.
Ids of every SceneObject created by the load.
Number of line segments emitted across all SceneObjects.
Number of <text> elements rasterised as textured quads.
Number of fill triangles emitted across all SceneObjects.
SVG viewBox in user-space units (post-SVGLoadOptions.scale).
Result returned by SVGLoader.load on success.