Performance-Issue, group elements

hi, i try to group a lot of elements (>1000).

this is my code at the moment:

-----------------------------------------------------------
Element group = editor.doc.createElementNS(editor.svgNS,
SVGConstants.SVG_G_TAG);
group.setAttributeNS(null, "id", groupID);

for(int i=0; i<nodes.size(); i++) {
	group.appendChild(nodes.get(i));
}
  
editor.doc.getRootElement().appendChild(group);
-----------------------------------------------------------

this takes a lot of time > 8s

is there a way to optimize grouping elements?

thanks!  
  



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