protected function generatePumlDiagram(): string
    {
        /**
         * @var \PhingXMLContext $xmlContext
         */
        $xmlContext = $this->getProject()
            ->getReference("phing.parsing.context");
        $importStack = $xmlContext->getImportStack();
        $pumlDiagram = $this->generatePuml($importStack);

        return $pumlDiagram;
    }