pragma solidity ^0.4.25;

contract UserContentRegisterInterface {
    function getUserContentBytes(address whichUser, uint256 index) public constant returns (bytes32, bytes32);
    function getNumContent(address whichUser) public constant returns (uint256);
}

contract StringBytes32UtilInterface {
    function stringToBytes32Tuple(string data) public constant returns (bytes32, bytes32);
    function bytes32TupleToString(bytes32 one, bytes32 two) public pure returns (string);
}