function enterShelter(uint256[] calldata _pids) external onlyOwner {
    for(uint256 i = 0; i<_pids.length; i++){
        IRewardStaking pool = IRewardStaking(convexPool[_pids[i]]);
        uint256 amount = pool.balanceOf(address(this));
        pool.withdrawAndUnwrap(amount, false);
        IERC20 lpToken = IERC20(
            pool.poolInfo(_pids[i]).lptoken
        );
        amountInShelter[lpToken] = amount;
        lpToken.safeTransfer(address(shelter), amount);
        shelter.activate(lpToken);
    }
}
function totalShare(IERC20 _token) external view override returns(uint256) {
    // this will be zero if shelter is not activated
    return amountInShelter[_token];
}
