@java.lang.Override
    @java.lang.SuppressWarnings("unchecked")
    public io.grpc.stub.StreamObserver<Req> invoke(
        io.grpc.stub.StreamObserver<Resp> responseObserver) {
      switch (methodId) {
        case METHODID_SAY_HELLO_STREAMING:
          return (io.grpc.stub.StreamObserver<Req>) serviceImpl.sayHelloStreaming(
              (io.grpc.stub.StreamObserver<io.grpc.examples.manualflowcontrol.HelloReply>) responseObserver);
        default:
          throw new AssertionError();
      }
    }
<pre>
The greeting service definition.
</pre>
agent-module/plugins-it/google-grpc-it/google-grpc-1-8-it/src/test/java/io/grpc/examples/manualflowcontrol/StreamingGreeterGrpc.java