True when shape is a face, false when it is a wire.
SVG tag the shape came from: "path" | "rect" | "circle" | ...
Whether the source subpaths were closed.
OptionalfillResolved fill colour, if any.
OptionalstrokeResolved stroke colour, if any.
OptionalstrokeStroke width (the "strength" of the line), if any.
OptionalopacityCombined opacity in [0, 1], if any.
OptionalidElement id, if any.
OptionalclassElement class attribute, if any.
The built shape: a wire, or a face when requested.