driver/connector.go
func (c *Connector) Locale() string {
	c.mu.RLock()
	defer c.mu.RUnlock()
	return c.locale
}
func (c *Connector) Locale() string {
	c.mu.RLock()
	defer c.mu.RUnlock()
	return c.locale
}
// Locale returns the locale of the connector.