context: qx.Proto._modifyManager = function(propValue, propOldValue, propData) {  if (propOldValue) {    propOldValue.remove(this);  }    if (propValue) {    propValue.add(this);  }    return true;}
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/40492e42f9a22a24cdd05c4b269ba4efea909fc9/AbstractPageViewButton.js/buggy/qooxdoo/frontend/framework/source/class/qx/ui/pageview/AbstractPageViewButton.js