from: dubbo-rpc-extensions
to: dubbo-serialization-extensions
evidence:
 - file: "dubbo-rpc-extensions/dubbo-rpc-hessian/src/main/java/org/apache/dubbo/rpc/protocol/hessian/HessianProtocol.java"
   contains "import org.apache.dubbo.serialize.hessian.dubbo.Hessian2FactoryInitializer;"