// File: contracts/TVLOT.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @title: The Very Last Of Them
/// @author: manifold.xyz

import "./manifold/ERC721Creator.sol";

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//                                                                                                                                         //
//                                                                                                                                         //
//    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^    //
//    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^    //
//    ^^                                                  5#PPGP5YJJJJP#&&&&#BGP5YYJ??JJJYYYYY5YY555PP!!7?G&.                        ^^    //
//    ^^                                                 :BPGBGPP555PG&&&&&#BGPPPYJJJ?!77?YJJJJJYJYYYYJ!??J&7                        ^^    //
//    ^^                                                 ?GGBBGPP5PGB&&&&&&BBG555YJJJJ7!7???YJJJJJJJJJJY5Y?G#                        ^^    //
//    ^^                                                .PPBBGGPPPB&&&&&&&#BGGPYYJYJ???77???JJJJJJJJJYYY55JG&.                       ^^    //
//    ^^                                                ?GBBPGPPG#&&&&&&&#BPPGPYJ???777777??JJJJYYYYYYY555P#Y                        ^^    //
//    ^^                                               .GB#GGP5B&&&&&&&&&BP55Y??!!~!7!!77!7?JJJYYYYYYYY555PB5                        ^^    //
//    ^^                                             .^YGB#GP5P&&&&&&@&&B5JJ??JY7!!7?J7!7!??J??YYJJJJYY55555&^                       ^^    //
//    ^^                                             #@&BBBGPPG&&&&&@&#PJ?YPGGGB##G5YYY?7JJ?JJJYJJJJ??Y55PYPB.                       ^^    //
//    ^^                                            :&&B####GPB&&&&&&GY?YB&#G5YYPGGPPGG555J?JY5P5PPP5JY55PY#J                        ^^    //
//    ^^                                            ~@#PG####G&&&&&&B57?#&#&#BY!~7??G#BGGPJJ5PGGB#B#BP5Y55G@7                        ^^    //
//    ^^                                            7@BP###&&&&&&&&#G5?YB#G&@@&JJ!~7B#B##YJ5PGG###&&&&G5YP@P                         ^^    //
//    ^^                                            Y&5YG#&&&&&&&&&GP5J?Y55YYY?7!~~5##&&GJY5PPB&&BPPB&&G5P&~                         ^^    //
//    ^^                                            P&GPB#&&&&&&&&&B55YJ?7777!777?P###&BGJYYY5G&@@&PPB&G55#?                         ^^    //
//    ^^                                            G&&&&&B#&###&###PYJ?!7!!!!!?YB###BBB5?JYY55PPPPPBPPP5G&^                         ^^    //
//    ^^                                            Y&&&&&####&&##BBPJYJ!!77??7?YPGBB##BPJJJYJYYYYY55YY5#&P                          ^^    //
//    ^^                                            ^&@&###G#&&&&#BG5J7YJ?YY?7!!JGBGB&#G5?JYYYJJJJJ?JYYG@Y                           ^^    //
//    ^^                                             ^P&&&&B##&&##BGPY5GGG5?~^~5#GP5YPBPY!7YJ?JJJ?J?JJYG@!                           ^^    //
//    ^^                                               .!B@&BB&##BBGPPBBG5?!~?PGGYG###BPY?YYYJ??JJJJ?JY&@:                           ^^    //
//    ^^                                                  #@&B##BBBGPPPG5J?7YP5J?Y555PG55PBGYY?????JJY&@!                            ^^    //
//    ^^                                                  P@&B##BBBGPPP5P5YY55Y7!?J?!!?77????JJ??JJJP@&^                             ^^    //
//    ^^                                                  7@&BBBBB#BPP5YBPYJY55YY5PY!7J77777??JJJJ?B@&.                              ^^    //
//    ^^                                            ..:~?5#@&#BBBB#GPP5JGPPGB######BGPGPYJJJJJY5YJB@#.                               ^^    //
//    ^^                              ..:^!7?J5PGBB#BGB#&&&#####BGBGPPP7PGBG5PGGBBGBBGBBBBGP5555Y#@&.                                ^^    //
//    ^^                          !YYJ?77!!!!!!!7!~7!!?YPGPGBBGBBBBGPPYYBPPJ??JJJ?JJ5YJJJYY55YJJB@&.                                 ^^    //
//    ^^                       .?GP!:............:::^^!Y5555PGGGBBBBGGGPP5Y5?~!7~!!!!777??JY5YJG@&.                                  ^^    //
//    ^^                     .JBP?~::......     ..::^^^?Y5PPGBP5PGGGGGGGGP55Y7!!~~~!~~!7??JY55P&@B7^.                                ^^    //
//    ^^                   :5B5J!^^^:........      ...:^5GGGB##YJY5PB#BB##BGPY?777!777??JYPPGGBBBGP5YY?^                             ^^    //
//    ^^                 .P##5YJ!~~:.........         .:~PPB&&&BYJ?JYPB###&#BG55YYY5YYPG5PBBGP55Y7~!77?5PY~.                         ^^    //
//    ^^                ~@&BGPJJ?:~^.   .....  .       ..!G#&&&#PGP?!!JB&####GG&#GPPB&&&&5YJJYJ!~^^7?!^~!7YP5~                       ^^    //
//    ^^               :@&BBGYJY?:.!!.  ..........       .!&&&&&55GPJ?7JGP55GPG#BPGG&&&&&P^^:~J7::!7^..!J~:.~JY~                     ^^    //
//    ^^               B@BBBPJ7?J7..!7.  . .....:^.        7&&@#YJ555JYY~!7!!?P5??JJB##GJ?^..:77~:^^..:JY~...::J5                    ^^    //
//    ^^              J@BBBG5Y!~7J!..!?:   .....!!.         Y##GY?YPYJJY^^^^7JY?~JY!77~^^^:  .^!!^:...75?:.::.:.5G                   ^^    //
//    ^^             :@#BBB5YY?7~!!^..!?:  ....^?!:         :!!777?55J7~^^^7G57!75J:::::~!.  .:~!^...7PY~:.:.....&7                  ^^    //
//    ^^             P&BBBG?7?77??7~: .7?.   ..7J!:   ..    .:::^^~~!~^~~~7J?!!7777:....??  ..:~!:..7PP?:....^:..JG                  ^^    //
//    ^^            :&BBBBG?~~!!!7??7^.^J~.   :J?!.         .....^~~~^^~!~:....^:~!....!G.  ..:^^.:?PPJ^....~!...^#                  ^^    //
//    ^^            P#BBBBP?!~^^:^~7??~.~Y:   ^J?~.         .:::.:^^~~~~!~.....:^^:...:GJ .:::...^JPP?^....~!^.::^B                  ^^    //
//    ^^           ^&BBBBBP!^~~^::.^!77!:!?.  ~Y7^.        ..:::::::.~!!!7~^:^~!7~::::!G: ::...:~YPP?:.. .77:.:~.!P                  ^^    //
//    ^^           5@BBBBBP~:..^~^..:~!7!:~:  !Y7:....     ..:::::::..:^~!~!7~~^::.:::5Y .:....!YPP7... .??: .~~.5?                  ^^    //
//    ^^           ?@BBBBBP?~...:^....^!7!:.. ~Y~:...      .:^^:::::^~....~^::...::::7B^ .....:Y5P?.... !J. .^!:.#!                  ^^    //
//    ^^           :@#BBBGPY~...::.....:~!!^. ^?:...     ...:^^::::::::.:::~:^^:.:::^GY ......^5PY.....^~. .~!^..5P                  ^^    //
//    ^^            P@#BBGP57.  ..::.....:~!^.~!^....   ...^.:~~:::::::^^^::^~:.::::JG: ::....~55^.::^^...:~!^...:#.                 ^^    //
//    ^^             G@BGGP5Y~.   .:......:^~:.:^^...   ..:~. .~~^::::^^:::^~:::::^JP~ :^:....?5?. !~:..:~~~^.....B!                 ^^    //
//    ^^             Y@BGG5YJ?^.   .......:^^:. ~!:     ..^~:  :^~~::^^::::::::::~Y5^ ::::.. ^JJ~.::..^~~^^^..... YG                 ^^    //
//    ^^             B@GGP5JJ?7:..     ....:^^. !~.      .~!:  .^^~~~~^^~~^^^^!!75J. .:^^....~?7::..:^^::~7!......!&.                ^^    //
//    ^^             &&GGP5YJJ7:.......    ..^:.~.   .   :!~:  .^^:^^^^^~~~~~~??!:.  .^^^:...!!^.^^^^^~!?J?^......:&:                ^^    //
//    ^^            :@#GGP5Y?J7:..   .........:..   ... .^!~.   :^^....:..:!!~:.     .^~^:. .^^.^~!77?JYJ7^.......:&^                ^^    //
//    ^^            7@BGPP5YJ?~:....    ........   ...  :!~^.   .^~^.....:7^.        .^~^:...:.:?JJ??JYJ7^.........&^                ^^    //
//    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^    //
//    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^    //
//     .---. .-. .-..----.   .-. .-..----..----..-.  .-.   .-.     .--.   .----..---.     .----. .----.    .---. .-. .-..----..-.   .-.    //
//    {_   _}| {_} || {_     | | | || {_  | {}  }\ \/ /    | |    / {} \ { {__ {_   _}   /  {}  \| {_     {_   _}| {_} || {_  |  `.'  |    //
//      | |  | { } || {__    \ \_/ /| {__ | .-. \ }  {     | `--./  /\  \.-._} } | |     \      /| |        | |  | { } || {__ | |\ /| |    //
//      `-'  `-' `-'`----'    `---' `----'`-' `-' `--'     `----'`-'  `-'`----'  `-'      `----' `-'        `-'  `-' `-'`----'`-' ` `-     //
//                                                                                                                                         //
//                                _             ___                ____      _          _                                                  //
//                               | |__  _   _  |_ _|_ __   __ _   / ___|_ __(_)___  ___| |__   __ _ _   _                                  //
//                               | '_ \| | | |  | || '_ \ / _` | | |  _| '__| / __|/ __| '_ \ / _` | | | |                                 //
//                               | |_) | |_| |  | || | | | (_| | | |_| | |  | \__ \ (__| | | | (_| | |_| |                                 //
//                               |_.__/ \__, | |___|_| |_|\__,_|  \____|_|  |_|___/\___|_| |_|\__,_|\__,_|                                 //
//                                      |___/                                                                                              //
//                                                                                                                                         //
//                                                                                                                                         //
//                                                                                                                                         //
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


contract TVLOT is ERC721Creator {
    constructor() ERC721Creator("The Very Last Of Them", "TVLOT") {}
}

// File: contracts/manifold/ERC721Creator.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @author: manifold.xyz

import "@openzeppelin/contracts/proxy/Proxy.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/StorageSlot.sol";

contract ERC721Creator is Proxy {
    
    constructor(string memory name, string memory symbol) {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0x5133522ea5A0494EcB83F26311A095DDD7a9D4b6;
        (bool success, ) = 0x5133522ea5A0494EcB83F26311A095DDD7a9D4b6.delegatecall(abi.encodeWithSignature("initialize(string,string)", name, symbol));
        require(success, "Initialization failed");
    }
        
    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
     function implementation() public view returns (address) {
        return _implementation();
    }

    function _implementation() internal override view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }    

}

// File: node_modules/@openzeppelin/contracts/proxy/Proxy.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (proxy/Proxy.sol)

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    /**
     * @dev This is a virtual function that should be overridden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback() external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive() external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overridden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {}
}

// File: node_modules/@openzeppelin/contracts/utils/Address.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// File: node_modules/@openzeppelin/contracts/utils/StorageSlot.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```solidity
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, `uint256`._
 * _Available since v4.9 for `string`, `bytes`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` with member `value` located at `slot`.
     */
    function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
     */
    function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` with member `value` located at `slot`.
     */
    function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
     */
    function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }
}