src/Knp/Menu/MenuFactory.php
private function getExtensions()
    {
        if (null === $this->sorted) {
            krsort($this->extensions);
            $this->sorted = !empty($this->extensions) ? call_user_func_array('array_merge', $this->extensions) : array();
        }

        return $this->sorted;
    }
private function getExtensions()
    {
        if (null === $this->sorted) {
            krsort($this->extensions);
            $this->sorted = !empty($this->extensions) ? call_user_func_array('array_merge', $this->extensions) : array();
        }

        return $this->sorted;
    }
Sorts the internal list of extensions by priority.

@return ExtensionInterface[]