rem: value_of($type(null)).should_be(false); 
add: value_of($type(null)).should_be_false(); 
context: 	for_nulls: function(){		value_of($type(null)).should_be(false);	},
meta: 8516	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/8516/7f1afc7faec9287cc7436c37862e2162ec5c71cf/Core.js/clean/Spec/Core/Core.js