client.go
func OptClientManualServerAddress(enabled bool) ClientOption {
	return func(options *ClientOptions) error {
		options.manualServerAddress = enabled
		return nil
	}
}
func OptClientManualServerAddress(enabled bool) ClientOption {
	return func(options *ClientOptions) error {
		options.manualServerAddress = enabled
		return nil
	}
}
// OptClientManualServerAddress forces the client use only the manual server address