@After
  public void tearDown() throws Exception {
    server.stop();
  }
Test for testing protocol buffer based RPC mechanism. This test depends on test.proto definition
of types in <code>src/test/protobuf/test.proto</code> and protobuf service definition from
<code>src/test/protobuf/test_rpc_service.proto</code>
hbase-server/src/test/java/org/apache/hadoop/hbase/ipc/TestProtoBufRpc.java