LazyRecord\ConfigLoader::getDataSource PHP Method

    public function getDataSource($sourceId)
    {
        if ($sourceId === 'default') {
            // If there is a node named 'default', we should use it, otherwise
            // we get the node name from default attribute.
            $sourceId = $this->getDefaultDataSourceId();
        }
        if (isset($this->config['data_source']['nodes'][$sourceId])) {
            return $this->config['data_source']['nodes'][$sourceId];
        }
        throw new Exception("data source {$sourceId} is not defined.");
    }