sentinel-demo-sofa-rpc如何体现了限流的测试思想

sentinel-demo-sofa-rpc如何体现了限流的测试思想？
感觉就是一个sofa-rpc的服务端和客户端，没有限流在demo里

Start by reading the sentinel-demo-sofa-rpc server and client entry points mentioned in the issue, then compare their behavior with the repository's rate-limiting examples. Check whether the demo contains an executable limiting test or only a basic SOFA-RPC interaction. Done means documenting how the demo demonstrates rate-limiting test ideas, or clearly identifying what is missing.

Written by the indexing model from the issue text.