rem: if (!this[key] || this.has(key)) this[key] = value; 
add: if (!this[key] || this.hasOwnProperty(key)) this[key] = value; 
context: 	set: function(key, value){		if (!this[key] || this.has(key)) this[key] = value;		return this;	},
meta: 7052	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7052/7f57639a9463cd4e2577f39af7503ce7d0e73459/Hash.js/clean/Source/Native/Hash.js