UserInfo storage user = userInfo[_pid][_msgSender()];
updatePool(_pid);

if(user.amount > 0) {  
    uint pending = user.amount * pool.accConcurPerShare / _concurShareMultiplier - user.rewardDebt;
    if (pending > 0) {
        safeConcurTransfer(_recipient, pending);
    }
}
function depositFor(address _user, uint _pid, uint _amount) external nonReentrant onlyDepositor {
    PoolInfo storage pool = poolInfo[_pid];
    UserInfo storage user = userInfo[_pid][_user];
