load abstract method
void
load()
Load raw bounds from the parser and update internal state.
Implementations should obtain the list of bounds extracted from the SVG
(expressed in the SVG document coordinate space / viewBox), store or
update their internal snapshot/state with that unscaled data, and call
notifyListeners() once the load completes. Any conversion into
widget/device coordinates (scaling, fitting or alignment) should be
performed by calling resolve(...) (or the delegate's scaleSvgBounds).
Implementation
void load();