rem: return "assert !" + expression.toString(); 
add: return "assert " + expression.invert().toString(); 
context: function assertFalse(expression) {	return "assert !" + expression.toString();}
meta: 3428	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3428/9c787c7e6c12c5505c234cea90865fbee0d58139/ruby-rc.js/buggy/src/content/formats/ruby-rc.js