rem: }; 
add: } 
context: qx.Class.getChild = function(docNode, childType) {  if (docNode != null && docNode.children != null) {    for (var i = 0; i < docNode.children.length; i++) {      if (docNode.children[i].type == childType) {        return docNode.children[i];      }    }  }  return null;};
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