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

## Describe the proposal
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@wxbty PTAL
}
    public void setCluster(String cluster) {
        this.cluster = cluster;
    }
    public String getProxy() {
        return proxy;
    }
    public void setProxy(String proxy) {
        this.proxy = proxy;
    }
    public Integer getConnections() {
        return connections;
    }
    public void setConnections(Integer connections) {
        this.connections = connections;
    }
    @Parameter(key = REFERENCE_FILTER_KEY, append = true)
    public String getFilter() {
        return filter;
    }
    public void setFilter(String filter) {
        this.filter = filter;
    }
    @Parameter(key = INVOKER_LISTENER_KEY, append = true)
    public String getListener() {
        return listener;
    }
    public void setListener(String listener) {
        this.listener = listener;
    }