- [ ] 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
```
}
    public DubboBootstrap cache(ReferenceConfigCache cache) {
        this.cache = cache;
        return this;
    }
    public ReferenceConfigCache getCache() {
        if (cache == null) {
            cache = ReferenceConfigCache.getCache();
        }
        return cache;
    }
    public DubboBootstrap exportAsync() {
        this.exportAsync = true;
        return this;
    }
    public DubboBootstrap referAsync() {
        this.referAsync = true;
        return this;
    }
    @Deprecated
    public void init() {
        initialize();
    }
    /**
     * Initialize
     */
    private void initialize() {
        if (!initialized.compareAndSet(false, true)) {
            return;
        }