add: return undefined; 
context: function getProductById(productId) {  for (var i=0; i<products.length; i++) {    if (products[i].product_id == productId) {      return (products[i]);    }  }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/07658fa91da4748712929f7644fdb027472f39d9/SelectBoxes.js/clean/webtools/litmus/js/SelectBoxes.js