zmapleshine

https://github.com/sofastack/sofa-tracer/blob/ca868465613c7cdd86b2de943e472201d8734469/sofa-tracer-plugins/sofa-tracer-dubbo-plugin/src/main/java/com/alipay/sofa/tracer/plugins/dubbo/DubboSofaTracerFilter.java#L160 when this filter invoking as client filter ,this line shows that use invocation as trace 'cross-process' propagation medium. is this a deprecated filter?