code: function(isolate) {
          var ChildScope,
              child;
  
          if (isolate) {
            child = new Scope();
            child.$root = this.$root;
            // ensure that there is just one async queue per $rootScope and its children
            child.$$asyncQueue = this.$$asyncQueue;
            child.$$postDigestQueue = this.$$postDigestQueue;
          } else {
            // Only create a child scope class if somebody asks for one,
            // but cache it to allow the VM to optimize lookups.
            if (!this.$$childScopeClass) {
              this.$$childScopeClass = function() {
                this.$$watchers = this.$$nextSibling =
                    this.$$childHead = this.$$childTail = null;
                this.$$listeners = {};
                this.$$listenerCount = {};
                this.$id = nextUid();
                this.$$childScopeClass = null;
              };
              this.$$childScopeClass.prototype = this;
            }
            child = new this.$$childScopeClass();
          }
          child['this'] = child;
          child.$parent = this;
          child.$$prevSibling = this.$$childTail;
          if (this.$$childHead) {
            this.$$childTail.$$nextSibling = child;
            this.$$childTail = child;
          } else {
            this.$$childHead = this.$$childTail = child;
          }
          return child;
        }
docs: @ngdoc method
  @name $rootScope.Scope#$new
  @kind function
  
  @description
  Creates a new child {@link ng.$rootScope.Scope scope}.
  
  The parent scope will propagate the {@link ng.$rootScope.Scope#$digest $digest()} and
  {@link ng.$rootScope.Scope#$digest $digest()} events. The scope can be removed from the
  scope hierarchy using {@link ng.$rootScope.Scope#$destroy $destroy()}.
  
  {@link ng.$rootScope.Scope#$destroy $destroy()} must be called on a scope when it is
  desired for the scope and its child scopes to be permanently detached from the parent and
  thus stop participating in model change detection and listener notification by invoking.
  
  @param {boolean} isolate If true, then the scope does not prototypically inherit from the
  parent scope. The scope is isolated, as it can not see parent scope properties.
  When creating widgets, it is useful for the widget to not accidentally read parent
  state.
  
  @returns {Object} The newly created child scope.