  function setBonusToken(address newBonusERC20) external onlyBathHouse {
    bonusTokens.push(newBonusERC20);
  }
  function setBonusToken(address newBonusERC20) external onlyBathHouse {
    require(newBonusERC20 != address(0), "invalid_addr");
    if (bonusTokens.length > 0) {
      for (uint256 index = 0; index < bonusTokens.length; index++) {
        require (token != newBonusERC20, "token already exists")
      }
    }
    bonusTokens.push(newBonusERC20);
  }
