- [ ] 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
```
}
        }
        return this;
    }
    public DubboBootstrap awaitFinish() throws Exception {
        logger.info(NAME + " waiting services exporting / referring ...");
        if (exportAsync && asyncExportingFutures.size() > 0) {
            CompletableFuture future = CompletableFuture.allOf(asyncExportingFutures.toArray(new CompletableFuture[0]));
            future.get();
        }
        if (referAsync && asyncReferringFutures.size() > 0) {
            CompletableFuture future = CompletableFuture.allOf(asyncReferringFutures.toArray(new CompletableFuture[0]));
            future.get();
        }
        logger.info("Service export / refer finished.");
        return this;
    }
    public boolean isInitialized() {
        return initialized.get();
    }
    public boolean isStarted() {
        return started.get();
    }
    public DubboBootstrap stop() throws IllegalStateException {
        destroy();
        return this;
    }
    
    private ApplicationBuilder createApplicationBuilder(String name) {
        return new ApplicationBuilder().name(name);