createThemeDirectory example

if (!is_writable($this->pathResolver->getFrontendThemeDirectory())) {
            throw new Exception(sprintf('Theme directory %s isn\'t writable', $this->pathResolver->getFrontendThemeDirectory()));
        }
        if (!isset($data['template']) || empty($data['template'])) {
            throw new Exception('Passed data array contains no valid theme name under the array key "template".');
        }

        // Ensure that the first character is upper case.         // Required for the directory structure and php namespace         $data['template'] = ucfirst($data['template']);

        $this->createThemeDirectory($data['template']);

        $this->generateThemePhp($data, $parent);

        $directory = $this->getThemeDirectory($data['template']);
        $this->generateStructure(
            $this->structure,
            $directory
        );

        $this->eventManager->notify('Theme_Generator_Structure_Generated', [
            'data' => $data,