code: func NewDefaultConfig() *Config {
  	return &Config{
  		PropagationTimeout: env.GetOrDefaultSecond("INWX_PROPAGATION_TIMEOUT", dns01.DefaultPropagationTimeout),
  		PollingInterval:    env.GetOrDefaultSecond("INWX_POLLING_INTERVAL", dns01.DefaultPollingInterval),
  		TTL:                env.GetOrDefaultInt("INWX_TTL", 300),
  		Sandbox:            env.GetOrDefaultBool("INWX_SANDBOX", false),
  	}
  }
docs: // NewDefaultConfig returns a default configuration for the DNSProvider