### Environment

* Dubbo version: 2.7.3
* Operating System version: win 10
* Java version: 1.8

系统启动时报
Caused by: java.lang.IllegalArgumentException: Unsupported generic type false
	at org.apache.dubbo.config.ServiceConfig.setGeneric(ServiceConfig.java:1015)

这个错误只有在2.7.3的时候存在，在使用2.7.2的时候没有
@Override
    public void setListener(String listener) {
        checkMultiExtension(InvokerListener.class, "listener", listener);
        super.setListener(listener);
    }
    @Parameter(key = LAZY_CONNECT_KEY)
    public Boolean getLazy() {
        return lazy;
    }
    public void setLazy(Boolean lazy) {
        this.lazy = lazy;
    }
    @Override
    public void setOnconnect(String onconnect) {
        if (onconnect != null && onconnect.length() > 0) {
            this.stubevent = true;
        }
        super.setOnconnect(onconnect);
    }
    @Override
    public void setOndisconnect(String ondisconnect) {
        if (ondisconnect != null && ondisconnect.length() > 0) {
            this.stubevent = true;
        }
        super.setOndisconnect(ondisconnect);
    }
    @Parameter(key = STUB_EVENT_KEY)
    public Boolean getStubevent() {
        return stubevent;
    }