pragma solidity >=0.4.24; // https://docs.synthetix.io/contracts/source/interfaces/istakingrewards interface IStakingRewards { // Views function balanceOf(address account) external view returns (uint256); function earned(address account) external view returns (uint256); function getRewardForDuration() external view returns (uint256); function lastTimeRewardApplicable() external view returns (uint256); function rewardPerToken() external view returns (uint256); function rewardsDistribution() external view returns (address); function rewardsToken() external view returns (address); function totalSupply() external view returns (uint256); // Mutative function exit() external; function getReward() external; function stake(uint256 amount) external; function withdraw(uint256 amount) external; }