Fixes apache#9913, rmi protocol supoort group and version

dubbo-rpc/dubbo-rpc-rmi/src/test/java/org/apache/dubbo/rpc/protocol/rmi/RemoteService2Impl.java

@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.dubbo.rpc.protocol.rmi;
+
+import org.apache.dubbo.rpc.RpcContext;
+
+import java.rmi.RemoteException;
+
+/**
+ * analog multi-implementation
+ */
+public class RemoteService2Impl implements RemoteService {
+
+    public String getThreadName() throws RemoteException {
+        System.out.println("RpcContext.getContext().getRemoteHost()=" + RpcContext.getContext().getRemoteHost());
+        return Thread.currentThread().getName();
+    }
+
+    public String sayHello(String name) throws RemoteException {
+        return "hello " + name + "@" + RemoteService2Impl.class.getName();
+    }
+}