code: function(node) {
  	var dp = DOMDataUtils.getDataParsoid(node);
  	var dsr = Util.clone(dp.dsr);
  	if (dp.autoInsertedStart) { dsr[2] = null; }
  	if (dp.autoInsertedEnd) { dsr[3] = null; }
  	return dsr;
  }
docs: Serializing auto inserted content should invalidate the original separator