docs: function(attrs) {
                      // Try to add things as early as possible to the store (#457).
                      // This is the earliest possible moment, even before any properties are set.
                      var id = attrs && attrs[this.constructor.id];
                      if (can.Model._reqs && id != null) {
                          this.constructor.store[id] = this;
                      }
                      can.Map.prototype.setup.apply(this, arguments);
                  }