    elementView.getBBox([opt])

Return a bounding box for an element view. If `opt.useModelGeometry` option is set to `true`, the resulting bounding box will be calculated based on the element model dimensions (so that SVG sub elements sticking out of the element will be excluded). The difference from dia.Element.prototype.getBBox is that in this case, the bounding box will be adjusted based on the `joint.dia.Paper` translate and scale.