interface CitizenInterface {
 
    function joinNetwork(address[6] _contract) public;
    /*----------  ADMINISTRATOR ONLY FUNCTIONS  ----------*/
    function devTeamWithdraw() public;

    /*----------  WRITE FUNCTIONS  ----------*/
    function updateUsername(string _sNewUsername) public;
    //Sources: Token contract, DApps
    function pushRefIncome(address _sender) public payable;
    function withdrawFor(address _sender) public payable returns(uint256);
    function devTeamReinvest() public returns(uint256);

    /*----------  READ FUNCTIONS  ----------*/
    function getRefWallet(address _address) public view returns(uint256);
}
function updateUsername(string _sNewUsername) public;
/*----------  WRITE FUNCTIONS  ----------*/