abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!paused(), "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(paused(), "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}
/**
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 /::\    \                /::\    \                /::\    \            /::\    \               /::::\    \               /::\    \                
 /::::\    \              /::::\    \              /::::\    \           \:::\    \             /::::::\    \             /::::\    \               
 /::::::\    \            /::::::\    \            /::::::\    \           \:::\    \           /::::::::\    \           /::::::\    \              
 /:::/\:::\    \          /:::/\:::\    \          /:::/\:::\    \           \:::\    \         /:::/~~\:::\    \         /:::/\:::\    \             
 /:::/__\:::\    \        /:::/__\:::\    \        /:::/__\:::\    \           \:::\    \       /:::/    \:::\    \       /:::/__\:::\    \            
 /::::\   \:::\    \      /::::\   \:::\    \      /::::\   \:::\    \          /::::\    \     /:::/    / \:::\    \     /::::\   \:::\    \           
 /::::::\   \:::\    \    /::::::\   \:::\    \    /::::::\   \:::\    \        /::::::\    \   /:::/____/   \:::\____\   /::::::\   \:::\    \          
 /:::/\:::\   \:::\____\  /:::/\:::\   \:::\    \  /:::/\:::\   \:::\____\      /:::/\:::\    \ |:::|    |     |:::|    | /:::/\:::\   \:::\____\         
 /:::/  \:::\   \:::|    |/:::/  \:::\   \:::\____\/:::/  \:::\   \:::|    |    /:::/  \:::\____\|:::|____|     |:::|    |/:::/  \:::\   \:::|    |        
 \::/   |::::\  /:::|____|\::/    \:::\  /:::/    /\::/    \:::\  /:::|____|   /:::/    \::/    / \:::\    \   /:::/    / \::/   |::::\  /:::|____|        
 \/____|:::::\/:::/    /  \/____/ \:::\/:::/    /  \/_____/\:::\/:::/    /   /:::/    / \/____/   \:::\    \ /:::/    /   \/____|:::::\/:::/    /         
 |:::::::::/    /            \::::::/    /            \::::::/    /   /:::/    /             \:::\    /:::/    /          |:::::::::/    /          
 |::|\::::/    /              \::::/    /              \::::/    /   /:::/    /               \:::\__/:::/    /           |::|\::::/    /           
 |::| \::/____/               /:::/    /                \::/____/    \::/    /                 \::::::::/    /            |::| \::/____/            
 |::|  ~|                    /:::/    /                  ~~           \/____/                   \::::::/    /             |::|  ~|                  
 |::|   |                   /:::/    /                                                           \::::/    /              |::|   |                  
 \::|   |                  /:::/    /                                                             \::/____/               \::|   |                  
 \:|   |                  \::/    /                                                               ~~                      \:|   |                  
 \|___|                   \/____/                                                                                         \|___|                  
 
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
function paused() public view virtual returns (bool) {
    return _paused;
}

/**
 * @dev Returns true if the contract is paused, and false otherwise.
 */