Generated code do not compile about web3j-maven-plugin HOT 3 CLOSED

C:\>solc --version
solc, the solidity compiler commandline interface
Version: 0.4.18+commit.9cf6e910.Windows.msvc  

<!-- https://mvnrepository.com/artifact/org.web3j/web3j-maven-plugin -->
<dependency>
    <groupId>org.web3j</groupId>
    <artifactId>web3j-maven-plugin</artifactId>
    <version>0.1.4</version>
</dependency>

    public RemoteCall<DynamicArray<Int256>> subtractScalar(DynamicArray<Int256> self, Int256 a) {
        Function function = new Function("subtractScalar", 
                Arrays.<Type>asList(self, a), 
                Arrays.<TypeReference<?>>asList(new TypeReference<DynamicArray<Int256>>() {}));
        return executeRemoteCallSingleValueReturn(function);
    }