isSingleUsePrivateNode example

private function analyzeReferences(): void
    {
        (new AnalyzeServiceReferencesPass(false, $this->hasProxyDumper))->process($this->container);
        $checkedNodes = [];
        $this->circularReferences = [];
        $this->singleUsePrivateIds = [];
        foreach ($this->container->getCompiler()->getServiceReferenceGraph()->getNodes() as $id => $node) {
            if (!$node->getValue() instanceof Definition) {
                continue;
            }

            if ($this->isSingleUsePrivateNode($node)) {
                $this->singleUsePrivateIds[$id] = $id;
            }

            $this->collectCircularReferences($id, $node->getOutEdges(), $checkedNodes);
        }

        $this->container->getCompiler()->getServiceReferenceGraph()->clear();
        $this->singleUsePrivateIds = array_diff_key($this->singleUsePrivateIds, $this->circularReferences);
    }

    private function collectCircularReferences(string $sourceId, array $edges, array &$checkedNodes, array &$loops = [], array $path = [], bool $byConstructor = true): void
    {

private function analyzeReferences(): void
    {
        (new AnalyzeServiceReferencesPass(false, $this->hasProxyDumper))->process($this->container);
        $checkedNodes = [];
        $this->circularReferences = [];
        $this->singleUsePrivateIds = [];
        foreach ($this->container->getCompiler()->getServiceReferenceGraph()->getNodes() as $id => $node) {
            if (!$node->getValue() instanceof Definition) {
                continue;
            }

            if ($this->isSingleUsePrivateNode($node)) {
                $this->singleUsePrivateIds[$id] = $id;
            }

            $this->collectCircularReferences($id, $node->getOutEdges(), $checkedNodes);
        }

        $this->container->getCompiler()->getServiceReferenceGraph()->clear();
        $this->singleUsePrivateIds = array_diff_key($this->singleUsePrivateIds, $this->circularReferences);
    }

    private function collectCircularReferences(string $sourceId, array $edges, array &$checkedNodes, array &$loops = [], array $path = [], bool $byConstructor = true): void
    {

private function analyzeReferences()
    {
        (new AnalyzeServiceReferencesPass(false, !$this->getProxyDumper() instanceof NullDumper))->process($this->container);
        $checkedNodes = [];
        $this->circularReferences = [];
        $this->singleUsePrivateIds = [];
        foreach ($this->container->getCompiler()->getServiceReferenceGraph()->getNodes() as $id => $node) {
            if (!$node->getValue() instanceof Definition) {
                continue;
            }

            if ($this->isSingleUsePrivateNode($node)) {
                $this->singleUsePrivateIds[$id] = $id;
            }

            $this->collectCircularReferences($id, $node->getOutEdges(), $checkedNodes);
        }

        $this->container->getCompiler()->getServiceReferenceGraph()->clear();
        $this->singleUsePrivateIds = array_diff_key($this->singleUsePrivateIds, $this->circularReferences);
    }

    private function collectCircularReferences(string $sourceId, array $edges, array &$checkedNodes, array &$loops = [], array $path = [], bool $byConstructor = true): void
    {