contract Sand777 is ERC777MetaTxExtension, ProxyImplementation, ERC20ApproveExtension, TheSandbox712, ERC777BaseToken {

    // TODO add _owners
    constructor(address _beneficiary) public {
        initSand(_beneficiary);
    }
    // TODO need to be updated if updating inheritance  // better pattern ?
    function initSand(address _beneficiary) public phase('SAND_777') {
        init712();
        init777(); 
        if(mTotalSupply == 0 ) { _mint(_beneficiary, 3000000000000000000000000000); }
    }

    function name() public pure returns (string memory) { return "SAND"; }
    function symbol() public pure returns (string memory) { return "SND"; }

    function burn(uint256 _amount) external {
        _burn(msg.sender, _amount);
    }
}
function initSand(address _beneficiary) public phase('SAND_777') {
        init712();
        init777(); 
        if(mTotalSupply == 0 ) { _mint(_beneficiary, 3000000000000000000000000000); }
    }
// TODO need to be updated if updating inheritance  // better pattern ?