public T send() throws IOException {
        return web3jService.send(this, responseType);
    }
@Test
    public void testEthCompileSolidity() throws Exception {
        web3j.ethCompileSolidity(
                        "contract test { function multiply(uint a) returns(uint d) {   return a * 7;   } }")
                .send();

        verifyResult(
                "{\"jsonrpc\":\"2.0\",\"method\":\"eth_compileSolidity\","
                        + "\"params\":[\"contract test { function multiply(uint a) returns(uint d) {"
                        + "   return a * 7;   } }\"],\"id\":1}");
    }