public void setIcon(final SvgImage svgImage) {
        face.setInnerHTML("<div class=\"svgIcon " + svgImage.getClassName() + "\">" + svgImage.getSvg() + "</div>");
    }
Used to decide whether to allow clicks to propagate up to the superclass
or container elements.
stroom-core-client-widget/src/main/java/stroom/widget/button/client/FabButton.java