withdrawCollectedAmountForEventId

This function allows an event manager to withdraw the collected amount for a specific event. It takes one parameter:

• _eventId: The unique identifier for the event from which the funds are to be withdrawn.

// Some code
```remix-solidity
/**
    WithdrawCollectedAmountForEventId: Withdraw the collected amount for a specific event.
    @param _eventId: The unique identifier for the event from which to withdraw funds.
    */
    function withdrawCollectedAmountForEventId(string calldata _eventId)
        public
        nonReentrant
    {
        // Check if the caller is an event manager
        if (!checkIfCallerIsEventManager(_eventId, _msgSender()))
            revert DecastGating__UserIsNotAnEventManager();

        // Get the amount to transfer
        uint256 _amountToTransfer = getCollectedAmountForEventId(_eventId);

        // Reset the collected amount for the event
        s_collectedAmountForEventId[_eventId] = 0;

        // Transfer the amount to the caller
        (bool check, ) = _msgSender().call{value: _amountToTransfer}("");
        if (!check) revert DecastGating__TransactionFailed();
    }
```

Explanation:

The function first verifies whether the caller is authorized to withdraw funds from the specified event. It does so by checking if the caller is an event manager for the given event using the checkIfCallerIsEventManager function. If the caller is not authorized, the function reverts the transaction to maintain security.

Next, the function retrieves the amount of funds collected for the specified event using the getCollectedAmountForEventId function, which returns the total amount collected for the event.

After obtaining the amount to transfer, the function resets the collected amount for the event to zero to prevent duplicate withdrawals or discrepancies.

Finally, the function transfers the collected amount to the caller using a low-level call to the caller's address. If the transfer fails for any reason, the function reverts the transaction to ensure the integrity of the operation.

Overall, this function provides a mechanism for event managers to withdraw funds collected from ticket sales for a specific event, facilitating efficient management of event finances and enabling seamless fund transfers.