public T send() throws IOException {
        return web3jService.send(this, responseType);
    }
@Test
    public void testEthGetBlockReceipts() throws Exception {
        web3j.ethGetBlockReceipts(DefaultBlockParameter.valueOf(BigInteger.valueOf(15455945)))
                .send();

        verifyResult(
                "{\"jsonrpc\":\"2.0\",\"method\":\"eth_getBlockReceipts\",\"params\":["
                        + "\"0xebd6c9\"],"
                        + "\"id\":1}");
    }