protected function updateItem($name, $item)
    {
        if ($name !== $item->name) {
            if (isset($this->items[$item->name])) {
                throw new InvalidArgumentException("Unable to change the item name. The name '{$item->name}' is already used by another item.");
            }

            // Remove old item in case of renaming
            unset($this->items[$name]);

            if (isset($this->children[$name])) {
                $this->children[$item->name] = $this->children[$name];
                unset($this->children[$name]);
            }
            foreach ($this->children as &$children) {
                if (isset($children[$name])) {
                    $children[$item->name] = $children[$name];
                    unset($children[$name]);
                }
            }
            foreach ($this->assignments as &$assignments) {
                if (isset($assignments[$name])) {
                    $assignments[$item->name] = $assignments[$name];
                    $assignments[$item->name]->roleName = $item->name;
                    unset($assignments[$name]);
                }
            }
            $this->saveAssignments();
        }

        $this->items[$item->name] = $item;

        $this->saveItems();
        return true;
    }
protected function updateItem($name, $item)
    {
        if ($name !== $item->name) {
            if (isset($this->items[$item->name])) {
                throw new InvalidArgumentException("Unable to change the item name. The name '{$item->name}' is already used by another item.");
            }

            // Remove old item in case of renaming
            unset($this->items[$name]);

            if (isset($this->children[$name])) {
                $this->children[$item->name] = $this->children[$name];
                unset($this->children[$name]);
            }
            foreach ($this->children as &$children) {
                if (isset($children[$name])) {
                    $children[$item->name] = $children[$name];
                    unset($children[$name]);
                }
            }
            foreach ($this->assignments as &$assignments) {
                if (isset($assignments[$name])) {
                    $assignments[$item->name] = $assignments[$name];
                    $assignments[$item->name]->roleName = $item->name;
                    unset($assignments[$name]);
                }
            }
            $this->saveAssignments();
        }

        $this->items[$item->name] = $item;

        $this->saveItems();
        return true;
    }
{@inheritdoc}