add: headers:{}, 
context: DWREngine.beginBatch = function() {  if (DWREngine._batch) {    DWREngine._handleError("Batch already started.");    return;  }  // Setup a batch  DWREngine._batch = {    map:{ callCount:0 },    paramCount:0,    ids:[],    preHooks:[],    postHooks:[]  };};
meta: 266	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/266/5698e064fd7cfccfcf96b459e1b1024bad78f808/engine.js/buggy/java/org/directwebremoting/engine.js