Contrato Inteligente de Token de Refrigerante usando OpenZeppelin (com limitação de transferência)

RefriTokenOZ.sol

// SPDX-License-Identifier: MIT
// Compatible with OpenZeppelin Contracts ^5.0.0
pragma solidity ^0.8.20;

import "@openzeppelin/[email protected]/token/ERC20/ERC20.sol";
import "@openzeppelin/[email protected]/token/ERC20/extensions/ERC20Permit.sol";

contract RefriToken is ERC20, ERC20Permit {
    constructor() ERC20("RefriToken", "RFT") ERC20Permit("RefriToken") {
        _mint(msg.sender, 12 * 10 ** decimals());
    }

	  function decimals() public pure override returns (uint8) {
		  return 0;
	  }

    function transfer(address _to, uint256 _value) pure public override returns (bool success) {
      require(false, "Transferring disabled for this token"); // desabilitar
    }
}