rem: register: function(responderToAdd) { if (!this.include(responderToAdd)) this.responders.push(responderToAdd); 
add: register: function(responder) { if (!this.include(responder)) this.responders.push(responder); 
context:   register: function(responderToAdd) {    if (!this.include(responderToAdd))      this.responders.push(responderToAdd);  },
meta: 2801	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/2801/7e143d2df37946a5416f0f043869478087652eb6/prototype.js/clean/examples/testcases/prototype.js