lib/Yucca/Component/ConnectionManager.php
protected function buildConnection(array $connectionConfig)
    {
        if (false === isset($connectionConfig['type'])) {
            throw new \InvalidArgumentException("Connection is not well formed : missing key \"type\"");
        }

        return $this->getConnectionFactory($connectionConfig['type'])->getConnection($connectionConfig);
    }
protected function buildConnection(array $connectionConfig)
    {
        if (false === isset($connectionConfig['type'])) {
            throw new \InvalidArgumentException("Connection is not well formed : missing key \"type\"");
        }

        return $this->getConnectionFactory($connectionConfig['type'])->getConnection($connectionConfig);
    }
Build connection
@param array $connectionConfig
@throws \InvalidArgumentException
@return mixed