Neos\Flow\Package\Package::getFunctionalTestsClassFiles PHP Method

    public function getFunctionalTestsClassFiles()
    {
        $namespaces = $this->getNamespaces();
        if (is_dir($this->packagePath . self::DIRECTORY_TESTS_FUNCTIONAL)) {
            // TODO REFACTOR replace with usage of "autoload-dev"
            $namespacePrefix = str_replace('/', '\\', Files::concatenatePaths([reset($namespaces), '\\Tests\\Functional\\']));
            foreach ($this->getClassesInNormalizedAutoloadPath($this->packagePath . self::DIRECTORY_TESTS_FUNCTIONAL, $namespacePrefix) as $className => $classPath) {
                (yield $className => $classPath);
            }
        }
    }