code: function(string) {
  		var hit = null,
  			looks = false;
  		if (gui.Type.isString(string)) {
  			hit = this.extractKey(string);
  			looks = hit && hit[0] === string;
  		}
  		return looks;
  	}
docs: String appears to be a generated key? We don't look it up in the key cache,
  so this method can be used to check a key that was generated in old session.
  @param {String} string
  @returns {boolean}