{
  "contractName": "Context",
  "sourceName": "solc_0.7/openzeppelin/GSN/Context.sol",
  "abi": [],
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    "version": 1
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    "gasEstimates": null,
    "methodIdentifiers": {}
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  "metadata": "{\"compiler\":{\"version\":\"0.7.6+commit.7338295f\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"solc_0.7/openzeppelin/GSN/Context.sol\":\"Context\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\",\"useLiteralContent\":true},\"optimizer\":{\"enabled\":true,\"runs\":999999},\"remappings\":[]},\"sources\":{\"solc_0.7/openzeppelin/GSN/Context.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\n/*\\n * @dev Provides information about the current execution context, including the\\n * sender of the transaction and its data. While these are generally available\\n * via msg.sender and msg.data, they should not be accessed in such a direct\\n * manner, since when dealing with GSN meta-transactions the account sending and\\n * paying for execution may not be the actual sender (as far as an application\\n * is concerned).\\n *\\n * This contract is only required for intermediate, library-like contracts.\\n */\\nabstract contract Context {\\n    function _msgSender() internal view virtual returns (address payable) {\\n        return msg.sender;\\n    }\\n\\n    function _msgData() internal view virtual returns (bytes memory) {\\n        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\\n        return msg.data;\\n    }\\n}\\n\",\"keccak256\":\"0x910a2e625b71168563edf9eeef55a50d6d699acfe27ceba3921f291829a8f938\",\"license\":\"MIT\"}},\"version\":1}",
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  "solcInput": "{\n  \"language\": \"Solidity\",\n  \"sources\": {\n    \"solc_0.7/openzeppelin/access/Ownable.sol\": {\n      \"content\": \"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\nimport \\\"../GSN/Context.sol\\\";\\n/**\\n * @dev Contract module which provides a basic access control mechanism, where\\n * there is an account (an owner) that can be granted exclusive access to\\n * specific functions.\\n *\\n * By default, the owner account will be the one that deploys the contract. This\\n * can later be changed with {transferOwnership}.\\n *\\n * This module is used through inheritance. It will make available the modifier\\n * `onlyOwner`, which can be applied to your functions to restrict their use to\\n * the owner.\\n */\\ncontract Ownable is Context {\\n    address private _owner;\\n\\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\\n\\n    /**\\n     * @dev Initializes the contract setting the deployer as the initial owner.\\n     */\\n    constructor (address initialOwner) {\\n        _owner = initialOwner;\\n        emit OwnershipTransferred(address(0), initialOwner);\\n    }\\n\\n    /**\\n     * @dev Returns the address of the current owner.\\n     */\\n    function owner() public view returns (address) {\\n        return _owner;\\n    }\\n\\n    /**\\n     * @dev Throws if called by any account other than the owner.\\n     */\\n    modifier onlyOwner() {\\n        require(_owner == _msgSender(), \\\"Ownable: caller is not the owner\\\");\\n        _;\\n    }\\n\\n    /**\\n     * @dev Leaves the contract without owner. It will not be possible to call\\n     * `onlyOwner` functions anymore. Can only be called by the current owner.\\n     *\\n     * NOTE: Renouncing ownership will leave the contract without an owner,\\n     * thereby removing any functionality that is only available to the owner.\\n     */\\n    function renounceOwnership() public virtual onlyOwner {\\n        emit OwnershipTransferred(_owner, address(0));\\n        _owner = address(0);\\n    }\\n\\n    /**\\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\\n     * Can only be called by the current owner.\\n     */\\n    function transferOwnership(address newOwner) public virtual onlyOwner {\\n        require(newOwner != address(0), \\\"Ownable: new owner is the zero address\\\");\\n        emit OwnershipTransferred(_owner, newOwner);\\n        _owner = newOwner;\\n    }\\n}\\n\"\n    },\n    \"solc_0.7/openzeppelin/GSN/Context.sol\": {\n      \"content\": \"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\n/*\\n * @dev Provides information about the current execution context, including the\\n * sender of the transaction and its data. While these are generally available\\n * via msg.sender and msg.data, they should not be accessed in such a direct\\n * manner, since when dealing with GSN meta-transactions the account sending and\\n * paying for execution may not be the actual sender (as far as an application\\n * is concerned).\\n *\\n * This contract is only required for intermediate, library-like contracts.\\n */\\nabstract contract Context {\\n    function _msgSender() internal view virtual returns (address payable) {\\n        return msg.sender;\\n    }\\n\\n    function _msgData() internal view virtual returns (bytes memory) {\\n        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\\n        return msg.data;\\n    }\\n}\\n\"\n    },\n    \"solc_0.7/openzeppelin/proxy/ProxyAdmin.sol\": {\n      \"content\": \"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\nimport \\\"../access/Ownable.sol\\\";\\nimport \\\"./TransparentUpgradeableProxy.sol\\\";\\n\\n/**\\n * @dev This is an auxiliary contract meant to be assigned as the admin of a {TransparentUpgradeableProxy}. For an\\n * explanation of why you would want to use this see the documentation for {TransparentUpgradeableProxy}.\\n */\\ncontract ProxyAdmin is Ownable {\\n\\n    constructor(address owner) Ownable(owner) {}\\n\\n    /**\\n     * @dev Returns the current implementation of `proxy`.\\n     *\\n     * Requirements:\\n     *\\n     * - This contract must be the admin of `proxy`.\\n     */\\n    function getProxyImplementation(TransparentUpgradeableProxy proxy) public view returns (address) {\\n        // We need to manually run the static call since the getter cannot be flagged as view\\n        // bytes4(keccak256(\\\"implementation()\\\")) == 0x5c60da1b\\n        (bool success, bytes memory returndata) = address(proxy).staticcall(hex\\\"5c60da1b\\\");\\n        require(success);\\n        return abi.decode(returndata, (address));\\n    }\\n\\n    /**\\n     * @dev Returns the current admin of `proxy`.\\n     *\\n     * Requirements:\\n     *\\n     * - This contract must be the admin of `proxy`.\\n     */\\n    function getProxyAdmin(TransparentUpgradeableProxy proxy) public view returns (address) {\\n        // We need to manually run the static call since the getter cannot be flagged as view\\n        // bytes4(keccak256(\\\"admin()\\\")) == 0xf851a440\\n        (bool success, bytes memory returndata) = address(proxy).staticcall(hex\\\"f851a440\\\");\\n        require(success);\\n        return abi.decode(returndata, (address));\\n    }\\n\\n    /**\\n     * @dev Changes the admin of `proxy` to `newAdmin`.\\n     *\\n     * Requirements:\\n     *\\n     * - This contract must be the current admin of `proxy`.\\n     */\\n    function changeProxyAdmin(TransparentUpgradeableProxy proxy, address newAdmin) public onlyOwner {\\n        proxy.changeAdmin(newAdmin);\\n    }\\n\\n    /**\\n     * @dev Upgrades `proxy` to `implementation`. See {TransparentUpgradeableProxy-upgradeTo}.\\n     *\\n     * Requirements:\\n     *\\n     * - This contract must be the admin of `proxy`.\\n     */\\n    function upgrade(TransparentUpgradeableProxy proxy, address implementation) public onlyOwner {\\n        proxy.upgradeTo(implementation);\\n    }\\n\\n    /**\\n     * @dev Upgrades `proxy` to `implementation` and calls a function on the new implementation. See\\n     * {TransparentUpgradeableProxy-upgradeToAndCall}.\\n     *\\n     * Requirements:\\n     *\\n     * - This contract must be the admin of `proxy`.\\n     */\\n    function upgradeAndCall(TransparentUpgradeableProxy proxy, address implementation, bytes memory data) public payable onlyOwner {\\n        proxy.upgradeToAndCall{value: msg.value}(implementation, data);\\n    }\\n}\\n\"\n    },\n    \"solc_0.7/openzeppelin/proxy/TransparentUpgradeableProxy.sol\": {\n      \"content\": \"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\nimport \\\"./UpgradeableProxy.sol\\\";\\n\\n/**\\n * @dev This contract implements a proxy that is upgradeable by an admin.\\n * \\n * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector\\n * clashing], which can potentially be used in an attack, this contract uses the\\n * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two\\n * things that go hand in hand:\\n * \\n * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if\\n * that call matches one of the admin functions exposed by the proxy itself.\\n * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the\\n * implementation. If the admin tries to call a function on the implementation it will fail with an error that says\\n * \\\"admin cannot fallback to proxy target\\\".\\n * \\n * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing\\n * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due\\n * to sudden errors when trying to call a function from the proxy implementation.\\n * \\n * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,\\n * you should think of the `ProxyAdmin` instance as the real administrative inerface of your proxy.\\n */\\ncontract TransparentUpgradeableProxy is UpgradeableProxy {\\n    /**\\n     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and\\n     * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.\\n     */\\n    constructor(address initialLogic, address initialAdmin, bytes memory _data) payable UpgradeableProxy(initialLogic, _data) {\\n        assert(_ADMIN_SLOT == bytes32(uint256(keccak256(\\\"eip1967.proxy.admin\\\")) - 1));\\n        _setAdmin(initialAdmin);\\n    }\\n\\n    /**\\n     * @dev Emitted when the admin account has changed.\\n     */\\n    event AdminChanged(address previousAdmin, address newAdmin);\\n\\n    /**\\n     * @dev Storage slot with the admin of the contract.\\n     * This is the keccak-256 hash of \\\"eip1967.proxy.admin\\\" subtracted by 1, and is\\n     * validated in the constructor.\\n     */\\n    bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;\\n\\n    /**\\n     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.\\n     */\\n    modifier ifAdmin() {\\n        if (msg.sender == _admin()) {\\n            _;\\n        } else {\\n            _fallback();\\n        }\\n    }\\n\\n    /**\\n     * @dev Returns the current admin.\\n     * \\n     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.\\n     * \\n     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the\\n     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.\\n     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`\\n     */\\n    function admin() external ifAdmin returns (address) {\\n        return _admin();\\n    }\\n\\n    /**\\n     * @dev Returns the current implementation.\\n     * \\n     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.\\n     * \\n     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the\\n     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.\\n     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`\\n     */\\n    function implementation() external ifAdmin returns (address) {\\n        return _implementation();\\n    }\\n\\n    /**\\n     * @dev Changes the admin of the proxy.\\n     * \\n     * Emits an {AdminChanged} event.\\n     * \\n     * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.\\n     */\\n    function changeAdmin(address newAdmin) external ifAdmin {\\n        require(newAdmin != address(0), \\\"TransparentUpgradeableProxy: new admin is the zero address\\\");\\n        emit AdminChanged(_admin(), newAdmin);\\n        _setAdmin(newAdmin);\\n    }\\n\\n    /**\\n     * @dev Upgrade the implementation of the proxy.\\n     * \\n     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.\\n     */\\n    function upgradeTo(address newImplementation) external ifAdmin {\\n        _upgradeTo(newImplementation);\\n    }\\n\\n    /**\\n     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified\\n     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the\\n     * proxied contract.\\n     * \\n     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.\\n     */\\n    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {\\n        _upgradeTo(newImplementation);\\n        // solhint-disable-next-line avoid-low-level-calls\\n        (bool success,) = newImplementation.delegatecall(data);\\n        require(success);\\n    }\\n\\n    /**\\n     * @dev Returns the current admin.\\n     */\\n    function _admin() internal view returns (address adm) {\\n        bytes32 slot = _ADMIN_SLOT;\\n        // solhint-disable-next-line no-inline-assembly\\n        assembly {\\n            adm := sload(slot)\\n        }\\n    }\\n\\n    /**\\n     * @dev Stores a new address in the EIP1967 admin slot.\\n     */\\n    function _setAdmin(address newAdmin) private {\\n        bytes32 slot = _ADMIN_SLOT;\\n\\n        // solhint-disable-next-line no-inline-assembly\\n        assembly {\\n            sstore(slot, newAdmin)\\n        }\\n    }\\n\\n    /**\\n     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.\\n     */\\n    function _beforeFallback() internal override virtual {\\n        require(msg.sender != _admin(), \\\"TransparentUpgradeableProxy: admin cannot fallback to proxy target\\\");\\n        super._beforeFallback();\\n    }\\n}\\n\"\n    },\n    \"solc_0.7/openzeppelin/proxy/UpgradeableProxy.sol\": {\n      \"content\": \"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\nimport \\\"./Proxy.sol\\\";\\nimport \\\"../utils/Address.sol\\\";\\n\\n/**\\n * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an\\n * implementation address that can be changed. This address is stored in storage in the location specified by\\n * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the\\n * implementation behind the proxy.\\n * \\n * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see\\n * {TransparentUpgradeableProxy}.\\n */\\ncontract UpgradeableProxy is Proxy {\\n    /**\\n     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.\\n     * \\n     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded\\n     * function call, and allows initializating the storage of the proxy like a Solidity constructor.\\n     */\\n    constructor(address _logic, bytes memory _data) payable {\\n        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256(\\\"eip1967.proxy.implementation\\\")) - 1));\\n        _setImplementation(_logic);\\n        if(_data.length > 0) {\\n            // solhint-disable-next-line avoid-low-level-calls\\n            (bool success,) = _logic.delegatecall(_data);\\n            require(success);\\n        }\\n    }\\n\\n    /**\\n     * @dev Emitted when the implementation is upgraded.\\n     */\\n    event Upgraded(address indexed implementation);\\n\\n    /**\\n     * @dev Storage slot with the address of the current implementation.\\n     * This is the keccak-256 hash of \\\"eip1967.proxy.implementation\\\" subtracted by 1, and is\\n     * validated in the constructor.\\n     */\\n    bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;\\n\\n    /**\\n     * @dev Returns the current implementation address.\\n     */\\n    function _implementation() internal override view returns (address impl) {\\n        bytes32 slot = _IMPLEMENTATION_SLOT;\\n        // solhint-disable-next-line no-inline-assembly\\n        assembly {\\n            impl := sload(slot)\\n        }\\n    }\\n\\n    /**\\n     * @dev Upgrades the proxy to a new implementation.\\n     * \\n     * Emits an {Upgraded} event.\\n     */\\n    function _upgradeTo(address newImplementation) internal {\\n        _setImplementation(newImplementation);\\n        emit Upgraded(newImplementation);\\n    }\\n\\n    /**\\n     * @dev Stores a new address in the EIP1967 implementation slot.\\n     */\\n    function _setImplementation(address newImplementation) private {\\n        require(Address.isContract(newImplementation), \\\"UpgradeableProxy: new implementation is not a contract\\\");\\n\\n        bytes32 slot = _IMPLEMENTATION_SLOT;\\n\\n        // solhint-disable-next-line no-inline-assembly\\n        assembly {\\n            sstore(slot, newImplementation)\\n        }\\n    }\\n}\\n\"\n    },\n    \"solc_0.7/openzeppelin/proxy/Proxy.sol\": {\n      \"content\": \"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\n/**\\n * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM\\n * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to\\n * be specified by overriding the virtual {_implementation} function.\\n * \\n * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a\\n * different contract through the {_delegate} function.\\n * \\n * The success and return data of the delegated call will be returned back to the caller of the proxy.\\n */\\nabstract contract Proxy {\\n    /**\\n     * @dev Delegates the current call to `implementation`.\\n     * \\n     * This function does not return to its internall call site, it will return directly to the external caller.\\n     */\\n    function _delegate(address implementation) internal {\\n        // solhint-disable-next-line no-inline-assembly\\n        assembly {\\n            // Copy msg.data. We take full control of memory in this inline assembly\\n            // block because it will not return to Solidity code. We overwrite the\\n            // Solidity scratch pad at memory position 0.\\n            calldatacopy(0, 0, calldatasize())\\n\\n            // Call the implementation.\\n            // out and outsize are 0 because we don't know the size yet.\\n            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)\\n\\n            // Copy the returned data.\\n            returndatacopy(0, 0, returndatasize())\\n\\n            switch result\\n            // delegatecall returns 0 on error.\\n            case 0 { revert(0, returndatasize()) }\\n            default { return(0, returndatasize()) }\\n        }\\n    }\\n\\n    /**\\n     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function\\n     * and {_fallback} should delegate.\\n     */\\n    function _implementation() internal virtual view returns (address);\\n\\n    /**\\n     * @dev Delegates the current call to the address returned by `_implementation()`.\\n     * \\n     * This function does not return to its internall call site, it will return directly to the external caller.\\n     */\\n    function _fallback() internal {\\n        _beforeFallback();\\n        _delegate(_implementation());\\n    }\\n\\n    /**\\n     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other\\n     * function in the contract matches the call data.\\n     */\\n    fallback () payable external {\\n        _fallback();\\n    }\\n\\n    /**\\n     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data\\n     * is empty.\\n     */\\n    receive () payable external {\\n        _fallback();\\n    }\\n\\n    /**\\n     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`\\n     * call, or as part of the Solidity `fallback` or `receive` functions.\\n     * \\n     * If overriden should call `super._beforeFallback()`.\\n     */\\n    function _beforeFallback() internal virtual {\\n    }\\n}\\n\"\n    },\n    \"solc_0.7/openzeppelin/utils/Address.sol\": {\n      \"content\": \"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\n/**\\n * @dev Collection of functions related to the address type\\n */\\nlibrary Address {\\n    /**\\n     * @dev Returns true if `account` is a contract.\\n     *\\n     * [IMPORTANT]\\n     * ====\\n     * It is unsafe to assume that an address for which this function returns\\n     * false is an externally-owned account (EOA) and not a contract.\\n     *\\n     * Among others, `isContract` will return false for the following\\n     * types of addresses:\\n     *\\n     *  - an externally-owned account\\n     *  - a contract in construction\\n     *  - an address where a contract will be created\\n     *  - an address where a contract lived, but was destroyed\\n     * ====\\n     */\\n    function isContract(address account) internal view returns (bool) {\\n        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts\\n        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned\\n        // for accounts without code, i.e. `keccak256('')`\\n        bytes32 codehash;\\n        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;\\n        // solhint-disable-next-line no-inline-assembly\\n        assembly { codehash := extcodehash(account) }\\n        return (codehash != accountHash && codehash != 0x0);\\n    }\\n\\n    /**\\n     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\\n     * `recipient`, forwarding all available gas and reverting on errors.\\n     *\\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\\n     * imposed by `transfer`, making them unable to receive funds via\\n     * `transfer`. {sendValue} removes this limitation.\\n     *\\n     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\\n     *\\n     * IMPORTANT: because control is transferred to `recipient`, care must be\\n     * taken to not create reentrancy vulnerabilities. Consider using\\n     * {ReentrancyGuard} or the\\n     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\\n     */\\n    function sendValue(address payable recipient, uint256 amount) internal {\\n        require(address(this).balance >= amount, \\\"Address: insufficient balance\\\");\\n\\n        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value\\n        (bool success, ) = recipient.call{ value: amount }(\\\"\\\");\\n        require(success, \\\"Address: unable to send value, recipient may have reverted\\\");\\n    }\\n\\n    /**\\n     * @dev Performs a Solidity function call using a low level `call`. A\\n     * plain`call` is an unsafe replacement for a function call: use this\\n     * function instead.\\n     *\\n     * If `target` reverts with a revert reason, it is bubbled up by this\\n     * function (like regular Solidity function calls).\\n     *\\n     * Returns the raw returned data. To convert to the expected return value,\\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\\n     *\\n     * Requirements:\\n     *\\n     * - `target` must be a contract.\\n     * - calling `target` with `data` must not revert.\\n     *\\n     * _Available since v3.1._\\n     */\\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\\n      return functionCall(target, data, \\\"Address: low-level call failed\\\");\\n    }\\n\\n    /**\\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\\n     * `errorMessage` as a fallback revert reason when `target` reverts.\\n     *\\n     * _Available since v3.1._\\n     */\\n    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {\\n        return _functionCallWithValue(target, data, 0, errorMessage);\\n    }\\n\\n    /**\\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\\n     * but also transferring `value` wei to `target`.\\n     *\\n     * Requirements:\\n     *\\n     * - the calling contract must have an ETH balance of at least `value`.\\n     * - the called Solidity function must be `payable`.\\n     *\\n     * _Available since v3.1._\\n     */\\n    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\\n        return functionCallWithValue(target, data, value, \\\"Address: low-level call with value failed\\\");\\n    }\\n\\n    /**\\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\\n     *\\n     * _Available since v3.1._\\n     */\\n    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {\\n        require(address(this).balance >= value, \\\"Address: insufficient balance for call\\\");\\n        return _functionCallWithValue(target, data, value, errorMessage);\\n    }\\n\\n    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {\\n        require(isContract(target), \\\"Address: call to non-contract\\\");\\n\\n        // solhint-disable-next-line avoid-low-level-calls\\n        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);\\n        if (success) {\\n            return returndata;\\n        } else {\\n            // Look for revert reason and bubble it up if present\\n            if (returndata.length > 0) {\\n                // The easiest way to bubble the revert reason is using memory via assembly\\n\\n                // solhint-disable-next-line no-inline-assembly\\n                assembly {\\n                    let returndata_size := mload(returndata)\\n                    revert(add(32, returndata), returndata_size)\\n                }\\n            } else {\\n                revert(errorMessage);\\n            }\\n        }\\n    }\\n}\\n\"\n    },\n    \"solc_0.7/proxy/OptimizedTransparentUpgradeableProxy.sol\": {\n      \"content\": \"// SPDX-License-Identifier: MIT\\npragma solidity ^0.7.0;\\n\\nimport \\\"../openzeppelin/proxy/UpgradeableProxy.sol\\\";\\n\\n/**\\n * @dev This contract implements a proxy that is upgradeable by an admin.\\n *\\n * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector\\n * clashing], which can potentially be used in an attack, this contract uses the\\n * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two\\n * things that go hand in hand:\\n *\\n * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if\\n * that call matches one of the admin functions exposed by the proxy itself.\\n * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the\\n * implementation. If the admin tries to call a function on the implementation it will fail with an error that says\\n * \\\"admin cannot fallback to proxy target\\\".\\n *\\n * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing\\n * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due\\n * to sudden errors when trying to call a function from the proxy implementation.\\n *\\n * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,\\n * you should think of the `ProxyAdmin` instance as the real administrative inerface of your proxy.\\n */\\ncontract OptimizedTransparentUpgradeableProxy is UpgradeableProxy {\\n    address internal immutable _ADMIN;\\n\\n    /**\\n     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and\\n     * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.\\n     */\\n    constructor(\\n        address initialLogic,\\n        address initialAdmin,\\n        bytes memory _data\\n    ) payable UpgradeableProxy(initialLogic, _data) {\\n        assert(_ADMIN_SLOT == bytes32(uint256(keccak256(\\\"eip1967.proxy.admin\\\")) - 1));\\n        bytes32 slot = _ADMIN_SLOT;\\n\\n        _ADMIN = initialAdmin;\\n\\n        // still store it to work with EIP-1967\\n        // solhint-disable-next-line no-inline-assembly\\n        assembly {\\n            sstore(slot, initialAdmin)\\n        }\\n    }\\n\\n    /**\\n     * @dev Storage slot with the admin of the contract.\\n     * This is the keccak-256 hash of \\\"eip1967.proxy.admin\\\" subtracted by 1, and is\\n     * validated in the constructor.\\n     */\\n    bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;\\n\\n    /**\\n     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.\\n     */\\n    modifier ifAdmin() {\\n        if (msg.sender == _admin()) {\\n            _;\\n        } else {\\n            _fallback();\\n        }\\n    }\\n\\n    /**\\n     * @dev Returns the current admin.\\n     *\\n     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.\\n     *\\n     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the\\n     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.\\n     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`\\n     */\\n    function admin() external ifAdmin returns (address) {\\n        return _admin();\\n    }\\n\\n    /**\\n     * @dev Returns the current implementation.\\n     *\\n     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.\\n     *\\n     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the\\n     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.\\n     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`\\n     */\\n    function implementation() external ifAdmin returns (address) {\\n        return _implementation();\\n    }\\n\\n    /**\\n     * @dev Upgrade the implementation of the proxy.\\n     *\\n     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.\\n     */\\n    function upgradeTo(address newImplementation) external ifAdmin {\\n        _upgradeTo(newImplementation);\\n    }\\n\\n    /**\\n     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified\\n     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the\\n     * proxied contract.\\n     *\\n     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.\\n     */\\n    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {\\n        _upgradeTo(newImplementation);\\n        // solhint-disable-next-line avoid-low-level-calls\\n        (bool success, ) = newImplementation.delegatecall(data);\\n        require(success);\\n    }\\n\\n    /**\\n     * @dev Returns the current admin.\\n     */\\n    function _admin() internal view returns (address adm) {\\n        return _ADMIN;\\n    }\\n\\n    /**\\n     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.\\n     */\\n    function _beforeFallback() internal virtual override {\\n        require(msg.sender != _admin(), \\\"TransparentUpgradeableProxy: admin cannot fallback to proxy target\\\");\\n        super._beforeFallback();\\n    }\\n}\\n\"\n    }\n  },\n  \"settings\": {\n    \"optimizer\": {\n      \"enabled\": true,\n      \"runs\": 999999\n    },\n    \"outputSelection\": {\n      \"*\": {\n        \"*\": [\n          \"abi\",\n          \"evm.bytecode\",\n          \"evm.deployedBytecode\",\n          \"evm.methodIdentifiers\",\n          \"metadata\",\n          \"devdoc\",\n          \"userdoc\",\n          \"storageLayout\",\n          \"evm.gasEstimates\"\n        ],\n        \"\": [\n          \"ast\"\n        ]\n      }\n    },\n    \"metadata\": {\n      \"useLiteralContent\": true\n    }\n  }\n}",
  "solcInputHash": "1635d55d57a0a2552952c0d22586ed23"
}