broker/src/main/java/org/apache/rocketmq/broker/BrokerStartup.java [262:270]:
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    private static void properties2SystemEnv(Properties properties) {
        if (properties == null) {
            return;
        }
        String rmqAddressServerDomain = properties.getProperty("rmqAddressServerDomain", MixAll.WS_DOMAIN_NAME);
        String rmqAddressServerSubGroup = properties.getProperty("rmqAddressServerSubGroup", MixAll.WS_DOMAIN_SUBGROUP);
        System.setProperty("rocketmq.namesrv.domain", rmqAddressServerDomain);
        System.setProperty("rocketmq.namesrv.domain.subgroup", rmqAddressServerSubGroup);
    }
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container/src/main/java/org/apache/rocketmq/container/BrokerContainerStartup.java [369:377]:
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    private static void properties2SystemEnv(Properties properties) {
        if (properties == null) {
            return;
        }
        String rmqAddressServerDomain = properties.getProperty("rmqAddressServerDomain", MixAll.WS_DOMAIN_NAME);
        String rmqAddressServerSubGroup = properties.getProperty("rmqAddressServerSubGroup", MixAll.WS_DOMAIN_SUBGROUP);
        System.setProperty("rocketmq.namesrv.domain", rmqAddressServerDomain);
        System.setProperty("rocketmq.namesrv.domain.subgroup", rmqAddressServerSubGroup);
    }
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