contract RewardsDistributionRecipient is IRewardsDistributionRecipient {

    // @abstract
    function notifyRewardAmount(uint256 reward) external;
    function getRewardToken() external view returns (IERC20);

    // This address has the ability to distribute the rewards
    address public rewardsDistributor;

    /** @dev Recipient is a module, governed by mStable governance */
    constructor(address _rewardsDistributor) internal
    {
        rewardsDistributor = _rewardsDistributor;
    }

    /**
     * @dev Only the rewards distributor can notify about rewards
     */
    modifier onlyRewardsDistributor() {
        require(msg.sender == rewardsDistributor, "Caller is not reward distributor");
        _;
    }
}
function notifyRewardAmount(uint256 reward) external;

// @abstract