contract MTokenAllowanceController {

    ////////////////////////
    // Internal functions
    ////////////////////////

    /// @notice Notifies the controller about an approval allowing the
    ///  controller to react if desired
    /// @param owner The address that calls `approve()`
    /// @param spender The spender in the `approve()` call
    /// @param amount The amount in the `approve()` call
    /// @return False if the controller does not authorize the approval
    function mOnApprove(
        address owner,
        address spender,
        uint256 amount
    )
        internal
        returns (bool allow);

}
/// @title controls spending approvals
/// @dev TokenAllowance observes this interface, Neumark contract implements it
function mOnApprove(
    address owner,
    address spender,
    uint256 amount
)
    internal
    returns (bool allow);

////////////////////////
/// @notice Notifies the controller about an approval allowing the
///  controller to react if desired
/// @param owner The address that calls `approve()`
/// @param spender The spender in the `approve()` call
/// @param amount The amount in the `approve()` call
/// @return False if the controller does not authorize the approval