values:
                            description: values is an array of string values. If the
                              operator is In or NotIn, the values array must be non-empty.
                              If the operator is Exists or DoesNotExist, the values
                              array must be empty. This array is replaced during a
                              strategic merge patch.

  // Valid operators are In, NotIn, Exists and DoesNotExist.
  optional string operator = 2;

  // values is an array of string values. If the operator is In or NotIn,
  // the values array must be non-empty. If the operator is Exists or DoesNotExist,
  // the values array must be empty. This array is replaced during a strategic
  // merge patch.
  // +optional
  repeated string values = 3;
}

		if selector.Matches(podsLabels) {
			cfgs = append(cfgs, cfg)
		}
	}

	return cfgs
}

// printConfigs prints the applied configs based on the member's type.
// When there is the array is empty, caller should make sure the intended
// log is handled in their methods.
func printConfigs(writer io.Writer, configs []*config.Config) {
	if len(configs) == 0 {
		return
	}