| 123456789101112131415161718 | Group = function(router, options) {  options = options || {};  this.prefix = options.prefix || '';  this.options = options;  this._router = router;};Group.prototype.route = function(pathDef, options) {  pathDef = this.prefix + pathDef;  return this._router.route(pathDef, options);};Group.prototype.group = function(options) {  var group = new Group(this._router, options);  group.parent = this;  return group;};
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