* @param elt The SVGMarkerElement uses to initialise the arrow.
* @param owner The figure the has the arrow.
* @since 2.0.0
*/
protected void setArrow(final SVGMarkerElement elt, final IShape owner, final String svgMarker) {
SVGNodeList nl = elt.getChildren(SVGElements.SVG_PATH);
if(nl.getLength()==0) {
nl = elt.getChildren(SVGElements.SVG_CIRCLE);
if(nl.getLength()>0)
setArrow((SVGCircleElement)nl.item(0), elt, owner);
}
else
setArrow((SVGPathElement)nl.item(0), elt, owner, svgMarker);
}