// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.6.12;

interface IRewardMinter {
  /**
   * @dev mints a reward. When the target is a stake token, it can return underlying, for which mintReward should also be called by the caller.
   */
  function mintReward(address holder, uint256 amount)
    external
    returns (IRewardMinter underlying, address mintTo);
}