public function formatMessage(
        /*# string */ $template,
        array $arguments = []
    )/*# : string */ {
        $this->stringize($arguments)->matchTemplate($template, $arguments);
        return vsprintf(
            $this->openTag .
            str_replace('%s', '<b>%s</b>', $template) .
            $this->closeTag,
            $arguments
        );
    }
public function formatMessage(
        /*# string */ $template,
        array $arguments = []
    )/*# : string */ {
        $this->stringize($arguments)->matchTemplate($template, $arguments);
        return vsprintf(
            $this->openTag .
            str_replace('%s', '<b>%s</b>', $template) .
            $this->closeTag,
            $arguments
        );
    }
{@inheritDoc}