Refactor `AbstractSimpleTransportTestCase` and `MockTransportService` to not use `Version.transportVersion` 
test/framework/src/main/java/org/elasticsearch/transport/AbstractSimpleTransportTestCase.java
}
                @Override
                public void handleException(TransportException exp) {
                    logger.error("Unexpected failure", exp);
                    fail("got exception instead of a response: " + exp.getMessage());
                }
            }
        ).get();
        assertThat(version1Response.value1, equalTo(1));
        assertThat(version1Response.value2, equalTo(0));
    }
    public void testVersionFrom1to1() throws Exception {
        serviceB.registerRequestHandler("internal:version", ThreadPool.Names.SAME, Version1Request::new, (request, channel, task) -> {
            assertThat(request.value1, equalTo(1));
            assertThat(request.value2, equalTo(2));
            Version1Response response = new Version1Response(1, 2);
            channel.sendResponse(response);
            
            assertThat(channel, instanceOf(TaskTransportChannel.class));
            assertThat(((TaskTransportChannel) channel).getChannel(), instanceOf(TransportService.DirectResponseChannel.class));
        });
        Version1Request version1Request = new Version1Request();
        version1Request.value1 = 1;
        version1Request.value2 = 2;
        Version1Response version1Response = submitRequest(
            serviceB,
            nodeB,
            "internal:version",
            version1Request,
            new TransportResponseHandler<Version1Response>() {