StackFormation\DependencyTracker::getStacks PHP Method

    public function getStacks()
    {
        $stacks = [];
        foreach ($this->stacks as $type => $typeData) {
            $stacks = array_merge($stacks, array_keys($typeData));
        }
        $stacks = array_unique($stacks);
        sort($stacks);
        return $stacks;
    }