@PostMapping("/echo")
    public List<EchoResponse> echo(final @RequestBody EchoRequest echoRequest) {
        return shenyuGrpcClientApi.echo(new GrpcData<>(Collections.singletonList(echoRequest)));
    }
echo.

@param echoRequest echoRequest
@return EchoResponse
shenyu-examples/shenyu-examples-sdk/shenyu-examples-sdk-grpc/shenyu-examples-sdk-grpc-consumer/src/main/java/org/apache/shenyu/examples/sdk/grpc/consumer/controller/ShenyuSdkGrpcConsumerController.java