Crypto-BEP20-Stakeable-WithdrawStake

    /**
     * @notice
     * withdrawStake takes in an amount and a index of the stake and will remove tokens from that stake
     * Notice index of the stake is the users stake counter, starting at 0 for the first stake
     * Will return the amount to MINT onto the acount
     * Will also calculateStakeReward and reset timer
    */
     function _withdrawStake(uint256 amount, uint256 index) internal returns(uint256){
         // Grab user_index which is the index to use to grab the Stake[]
        uint256 user_index = stakes[msg.sender];
        Stake memory current_stake = stakeholders[user_index].address_stakes[index];
        require(current_stake.amount >= amount, "Staking: Cannot withdraw more than you have staked");

         // Calculate available Reward first before we start modifying data
         uint256 reward = calculateStakeReward(current_stake);
         // Remove by subtracting the money unstaked 
         current_stake.amount = current_stake.amount - amount;
         // If stake is empty, 0, then remove it from the array of stakes
         if(current_stake.amount == 0){
             delete stakeholders[user_index].address_stakes[index];
         }else {
             // If not empty then replace the value of it
             stakeholders[user_index].address_stakes[index].amount = current_stake.amount;
             // Reset timer of stake
            stakeholders[user_index].address_stakes[index].since = block.timestamp;    
         }

         return amount+reward;

     }