Neos\FluidAdaptor\View\TemplatePaths::expandSubPackageAndController PHP Method

    protected function expandSubPackageAndController($paths, $controllerName, $subPackageKey = null, $bubbleControllerAndSubpackage = false)
    {
        if ($bubbleControllerAndSubpackage === false) {
            $paths = $this->expandPatterns($paths, '@subpackage', [$subPackageKey]);
            $paths = $this->expandPatterns($paths, '@controller', [$controllerName]);
            return $paths;
        }
        $numberOfPathsBeforeSubpackageExpansion = count($paths);
        $subpackageKeyParts = $subPackageKey !== null ? explode('\\', $subPackageKey) : [];
        $numberOfSubpackageParts = count($subpackageKeyParts);
        $subpackageReplacements = [];
        for ($i = 0; $i <= $numberOfSubpackageParts; $i++) {
            $subpackageReplacements[] = implode('/', $i < 0 ? $subpackageKeyParts : array_slice($subpackageKeyParts, $i));
        }
        $paths = $this->expandPatterns($paths, '@subpackage', $subpackageReplacements);
        for ($i = ($numberOfPathsBeforeSubpackageExpansion - 1) * ($numberOfSubpackageParts + 1); $i >= 0; $i -= $numberOfSubpackageParts + 1) {
            array_splice($paths, $i, 0, str_replace('@controller', $controllerName, $paths[$i]));
        }
        $paths = $this->expandPatterns($paths, '@controller', ['']);
        return $paths;
    }