PHPMD\TextUI\CommandLineOptions::createCustomRenderer PHP Method

    protected function createCustomRenderer()
    {
        if ($this->reportFormat !== '') {
            if (class_exists($this->reportFormat)) {
                return new $this->reportFormat();
            }
            // Try to load a custom renderer
            $fileName = strtr($this->reportFormat, '_', '/') . '.php';
            $fileHandle = @fopen($fileName, 'r', true);
            if (is_resource($fileHandle) === false) {
                $message = 'Can\'t find the custom report class: ' . $this->reportFormat;
                throw new \InvalidArgumentException($message, self::INPUT_ERROR);
            }
            @fclose($fileHandle);
            include_once $fileName;
            return new $this->reportFormat();
        }
        $message = 'Can\'t create report with format of ' . $this->reportFormat;
        throw new \InvalidArgumentException($message, self::INPUT_ERROR);
    }