rem: return this.select(function(value) { return value != undefined || value != null; 
add: return this.map(function(value, index) { iterator(value = collections.pluck(index)); return value; 
context:     return this.select(function(value) {      return value != undefined || value != null;    });
meta: 5150	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5150/44d85be227cc8496144d82df38b82dfcc1224861/prototype.js/clean/intermine/webapp/main/resources/main/js/prototype.js