rem: delete o._insertIndex; 
add: delete vChild._insertIndex; 
context: qx.Proto.removeAt = function(vIndex){  var vChild = this.getChildren()[vIndex];  if (vChild)  {    delete o._insertIndex;    vChild.setParent(null);  };};
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/2cf66a33784e31acb783a4eb95cad253dfea3167/Parent.js/buggy/qooxdoo/source/script/qx/ui/core/Parent.js