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## Ask your question here
![1678891955524](https://user-images.githubusercontent.com/31841743/225348655-2b03b0b0-2da0-4e34-bfd0-be07e6e54d60.jpg)
![1678891971675](https://user-images.githubusercontent.com/31841743/225348708-57f4df91-77c5-4b32-9e4e-cde573002ad2.jpg)
![image](https://user-images.githubusercontent.com/31841743/225348805-4a38363d-25c3-4245-ab33-ea1772c3f115.png)
可以看到按照图片顺序，properties中设置default属性，在我从configManager中打印的2个注册中心default值都为null,dubbo版本是3.0.12
}
    public String getVersion() {
        return version;
    }
    public void setVersion(String version) {
        this.version = version;
    }
    public Map<String, String> getParameters() {
        return parameters;
    }
    public void setParameters(Map<String, String> parameters) {
        this.parameters = parameters;
    }
    public void updateParameters(Map<String, String> parameters) {
        if (CollectionUtils.isEmptyMap(parameters)) {
            return;
        }
        if (this.parameters == null) {
            this.parameters = parameters;
        } else {
            this.parameters.putAll(parameters);
        }
    }
    public Boolean getSimplified() {
        return simplified;
    }
    public void setSimplified(Boolean simplified) {
        this.simplified = simplified;
    }
    @Parameter(key = EXTRA_KEYS_KEY)