Bluz\Session\Session::initAdapter PHP Method

    protected function initAdapter()
    {
        if (is_null($this->adapter) || $this->adapter === 'files') {
            // try to apply settings
            if ($settings = $this->getOption('settings', 'files')) {
                $this->setSavePath($settings['save_path']);
            }
            return true;
        } elseif (is_string($this->adapter)) {
            $adapterClass = '\\Bluz\\Session\\Adapter\\' . ucfirst($this->adapter);
            if (!class_exists($adapterClass) || !is_subclass_of($adapterClass, '\\SessionHandlerInterface')) {
                throw new ComponentException("Class for session adapter `{$this->adapter}` not found");
            }
            $settings = $this->getOption('settings', $this->adapter) ?: [];
            $this->adapter = new $adapterClass($settings);
        }
        return session_set_save_handler($this->adapter);
    }