- [ ] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.
- [ ] I have checked the [FAQ](https://github.com/apache/dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo version: 2.7.4.1
* Java version: 1.8

### Actual Result

[https://github.com/apache/dubbo/blob/839d2a604e629ea9e96b964be09ae221e85312ba/dubbo-common/src/main/java/org/apache/dubbo/rpc/model/ApplicationModel.java#L80](https://github.com/apache/dubbo/blob/839d2a604e629ea9e96b964be09ae221e85312ba/dubbo-common/src/main/java/org/apache/dubbo/rpc/model/ApplicationModel.java#L80)

### Expected Result

```
initFrameworkExts
```
}
    private RegistryBuilder createRegistryBuilder(String id) {
        return new RegistryBuilder().id(id);
    }
    private ProtocolBuilder createProtocolBuilder(String id) {
        return new ProtocolBuilder().id(id);
    }
    private ServiceBuilder createServiceBuilder(String id) {
        return new ServiceBuilder().id(id);
    }
    private ReferenceBuilder createReferenceBuilder(String id) {
        return new ReferenceBuilder().id(id);
    }
    private ProviderBuilder createProviderBuilder(String id) {
        return new ProviderBuilder().id(id);
    }
    private ConsumerBuilder createConsumerBuilder(String id) {
        return new ConsumerBuilder().id(id);
    }
    
    private DynamicConfiguration prepareEnvironment(ConfigCenterConfig configCenter) {
        if (configCenter.isValid()) {
            if (!configCenter.checkOrUpdateInited()) {
                return null;
            }
            DynamicConfiguration dynamicConfiguration = getDynamicConfiguration(configCenter.toUrl());
            String configContent = dynamicConfiguration.getProperties(configCenter.getConfigFile(), configCenter.getGroup());
            String appGroup = getApplication().getName();
            String appConfigContent = null;
            if (isNotEmpty(appGroup)) {