contract IMNTP { /*is StdToken */

    function balanceOf(address _owner) public constant returns (uint256);

    // Additional methods that MNTP contract provides
    function lockTransfer(bool _lock) public;
    function issueTokens(address _who, uint _tokens) public;
    function burnTokens(address _who, uint _tokens) public;
}
// StdToken inheritance is commented, because no 'totalSupply' needed
function lockTransfer(bool _lock) public;
// Additional methods that MNTP contract provides