Remove ERC165Storage

CHANGELOG.md

@@ -9,6 +9,7 @@
  * `TransparentUpgradeableProxy`: Removed `admin` and `implementation` getters, which were only callable by the proxy owner and thus not very useful. ([#3820](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3820))
  * `ProxyAdmin`: Removed `getProxyAdmin` and `getProxyImplementation` getters. ([#3820](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3820))
  * `ERC20`: Deleted `_beforeTokenTransfer` and `_afterTokenTransfer` hooks, added a new internal `_update` function for customizations, and refactored all extensions using those hooks to use `_update` instead. ([#3838](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3838))
+ * `ERC165Storage`: contract was removed. ([#](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/))
 
 ### How to upgrade from 4.x
 
@@ -33,6 +34,15 @@ For example, a contract using `ERC20`'s `_beforeTokenTransfer` hook would have t
   }
 ```
 
+#### ERC165Storage
+As a result of removing the ERC165Storage contracts, users wanting to indicate their support for interfaces should do so by overriding the `supportsInterface` function as seen below:
+
+```
+ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
+    return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
+ }
+```
+
 ## Unreleased
 
  * `ReentrancyGuard`: Add a `_reentrancyGuardEntered` function to expose the guard status. ([#3714](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3714))

contracts/utils/README.adoc

@@ -70,8 +70,6 @@ Note that, in all cases, accounts simply _declare_ their interfaces, but they ar
 
 {{ERC165}}
 
-{{ERC165Storage}}
-
 {{ERC165Checker}}
 
 {{IERC1820Registry}}

contracts/utils/introspection/ERC165.sol

@@ -17,7 +17,6 @@ import "./IERC165.sol";
  * }
  * ```
  *
- * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
  */
 abstract contract ERC165 is IERC165 {
     /**