function withdrawAdminFees(Swap storage self, address to) internal {
  IERC20[] memory pooledTokens = self.pooledTokens;
  for (uint256 i = 0; i < pooledTokens.length; i++) {
    IERC20 token = pooledTokens[i];
    uint256 balance = self.adminFees[i];
    if (balance != 0) {
      token.safeTransfer(to, balance);
    }
  }
}
function withdrawAdminFees(Swap storage self, address to) internal {
  IERC20[] memory pooledTokens = self.pooledTokens;
  for (uint256 i = 0; i < pooledTokens.length; i++) {
    IERC20 token = pooledTokens[i];
    uint256 balance = self.adminFees[i];
    if (balance != 0) {
      self.adminFees[i] = 0;
      token.safeTransfer(to, balance);
    }
  }
}
