public function getLogger($name = null)
    {
        $name = is_null($name) ? $this->defaultLogger : $name;
        $name = "{$this->getPrefix()}$name";
        if (!isset(static::$_loggers[$name])) {
            static::$_loggers[$name] = new Logger($name);
            $this->_setDefaultHandlers(static::$_loggers[$name]);
        }
        return static::$_loggers[$name];
    }