context: qx.Proto._checkParent = function(propValue, propOldValue, propData){  if (this.contains(propValue)) {    throw new Error("Could not insert myself into a child " + propValue + "!");  }  return propValue;}
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/32797ee18a2c92a797417cb1392f24fa90943b97/Widget.js/buggy/qooxdoo/frontend/framework/source/class/qx/ui/core/Widget.js