code: func CreateStandardChannelFilters(filterSupport channelconfig.Resources) *RuleSet {
  	ordererConfig, ok := filterSupport.OrdererConfig()
  	if !ok {
  		logger.Panicf("Missing orderer config")
  	}
  	return NewRuleSet([]Rule{
  		EmptyRejectRule,
  		NewExpirationRejectRule(filterSupport),
  		NewSizeFilter(ordererConfig),
  		NewSigFilter(policies.ChannelWriters, filterSupport),
  	})
  }
docs: // CreateStandardChannelFilters creates the set of filters for a normal (non-system) chain