@Test
public void testSerializeRpc_in() throws Exception {

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