// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "./IContractEntity.sol";
import "../metahub/core/IMetahub.sol";

abstract contract ContractEntity is IContractEntity, ERC165 {
    /**
     * @dev Metahub contract.
     * Contract (e.g. ACL, AssetClassRegistry etc), the Metahub depends on
     * still can be Contract Entities (with key), but
     * do not have the `_metahub` reference set.
     */
    IMetahub internal _metahub;

    /**
     * @inheritdoc IERC165
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) {
        return interfaceId == type(IContractEntity).interfaceId || super.supportsInterface(interfaceId);
    }
}