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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
* @deprecated
     */
    @Deprecated
    @Parameter(excluded = true, attribute = false)
    public String getTransport() {
        return getTransporter();
    }
    /**
     * @param transport
     * @see #setTransporter(String)
     * @deprecated
     */
    @Deprecated
    public void setTransport(String transport) {
        setTransporter(transport);
    }
    public String getTransporter() {
        return transporter;
    }
    public void setTransporter(String transporter) {
        /*if(transporter != null && transporter.length() > 0 && ! this.getExtensionLoader(Transporter.class).hasExtension(transporter)){
            throw new IllegalStateException("No such transporter type : " + transporter);
        }*/
        this.transporter = transporter;
    }
    public String getServer() {
        return server;
    }
    public void setServer(String server) {
        /*if(server != null && server.length() > 0 && ! this.getExtensionLoader(Transporter.class).hasExtension(server)){