setNormalizationClosures example

    protected function instantiateNode(): VariableNode
    {
        return new VariableNode($this->name, $this->parent, $this->pathSeparator);
    }

    protected function createNode(): NodeInterface
    {
        $node = $this->instantiateNode();

        if (isset($this->normalization)) {
            $node->setNormalizationClosures($this->normalization->before);
        }

        if (isset($this->merge)) {
            $node->setAllowOverwrite($this->merge->allowOverwrite);
        }

        if (true === $this->default) {
            $node->setDefaultValue($this->defaultValue);
        }

        $node->setAllowEmptyValue($this->allowEmptyValue);
        

$node->addEquivalentValue(false, $this->falseEquivalent);
        $node->setPerformDeepMerging($this->performDeepMerging);
        $node->setRequired($this->required);
        $node->setIgnoreExtraKeys($this->ignoreExtraKeys, $this->removeExtraKeys);
        $node->setNormalizeKeys($this->normalizeKeys);

        if ($this->deprecation) {
            $node->setDeprecated($this->deprecation['package'], $this->deprecation['version'], $this->deprecation['message']);
        }

        if (isset($this->normalization)) {
            $node->setNormalizationClosures($this->normalization->before);
            $node->setNormalizedTypes($this->normalization->declaredTypes);
            $node->setXmlRemappings($this->normalization->remappings);
        }

        if (isset($this->merge)) {
            $node->setAllowOverwrite($this->merge->allowOverwrite);
            $node->setAllowFalse($this->merge->allowFalse);
        }

        if (isset($this->validation)) {
            $node->setFinalValidationClosures($this->validation->rules);
        }