public T send() throws IOException {
        return web3jService.send(this, responseType);
    }
@Test
    public void testEthGetUncleByBlockNumberAndIndex() throws Exception {
        web3j.ethGetUncleByBlockNumberAndIndex(
                        DefaultBlockParameter.valueOf(Numeric.toBigInt("0x29c")), BigInteger.ZERO)
                .send();

        verifyResult(
                "{\"jsonrpc\":\"2.0\",\"method\":\"eth_getUncleByBlockNumberAndIndex\","
                        + "\"params\":[\"0x29c\",\"0x0\"],\"id\":1}");
    }