public T send() throws IOException {
        return web3jService.send(this, responseType);
    }
@Test
    public void testEthGetStorageAt() throws Exception {
        web3j.ethGetStorageAt(
                        "0x295a70b2de5e3953354a6a8344e616ed314d7251",
                        BigInteger.ZERO,
                        DefaultBlockParameterName.LATEST)
                .send();

        verifyResult(
                "{\"jsonrpc\":\"2.0\",\"method\":\"eth_getStorageAt\","
                        + "\"params\":[\"0x295a70b2de5e3953354a6a8344e616ed314d7251\",\"0x0\",\"latest\"],"
                        + "\"id\":1}");
    }