Returns a list of bounding rectangles for each box associated with this element.
Element.getClientRects from MDN.
The getClientRects() method-and-getboundingclientrect()-methods) from W3C.
@DomName('Element.getClientRects')
@DocsEditable()
List<Rectangle> getClientRects() => wrap_jso(_blink.BlinkElement.instance.getClientRects_Callback_0_(unwrap_jso(this)));