@Test
public void testSerializeRpc_in() throws Exception {

    Optional<RpcDefinition> loadedRpc = ConverterUtils.loadRpc(schemaContext, SIMPLE_IO_RPC_QNAME);
    Writer serializedRpc =
            bindingSerializer.serializeRpc(loadedRpc.get().getInput(), testedSimpleRpcInputNormalizedNodes);
    Assert.assertFalse(Strings.isNullOrEmpty(serializedRpc.toString()));
    LOG.info(serializedRpc.toString());
}