Add example to usage
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@ -126,7 +126,7 @@ func (s *ControllerOptions) AddFlags(fs *pflag.FlagSet) {
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"validation that do not explicitly state a dns provider.")
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fs.StringSliceVar(&s.DNS01Nameservers, "dns01-self-check-nameservers", []string{}, ""+
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"A list of comma seperated DNS server endpoints used for DNS01 check requests. "+
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"")
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"This should be a list containing IP address and port, for example: 8.8.8.8:53,8.8.4.4:53")
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}
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func (o *ControllerOptions) Validate() error {
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