# ERC165







*Implementation of the {IERC165} interface. Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check for the additional interface id that will be supported. For example: ```solidity function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); } ``` Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.*

## Methods

### supportsInterface

```solidity
function supportsInterface(bytes4 interfaceId) external view returns (bool)
```



*See {IERC165-supportsInterface}.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| interfaceId | bytes4 | undefined |

#### Returns

| Name | Type | Description |
|---|---|---|
| _0 | bool | undefined |