// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../../access/OwnablePermissions.sol"; import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol"; abstract contract ERC1155OpenZeppelinBase is ERC1155 { } abstract contract ERC1155OpenZeppelin is ERC1155OpenZeppelinBase { constructor(string memory uri_) ERC1155(uri_) {} } abstract contract ERC1155OpenZeppelinInitializable is OwnablePermissions, ERC1155OpenZeppelinBase { error ERC1155OpenZeppelinInitializable__AlreadyInitializedERC1155(); bool private _erc1155Initialized; function initializeERC1155(string memory uri_) public { _requireCallerIsContractOwner(); if(_erc1155Initialized) { revert ERC1155OpenZeppelinInitializable__AlreadyInitializedERC1155(); } _erc1155Initialized = true; _setURI(uri_); } }