refactor: interface inheritance

src/periphery/contracts/static-a-token/StataTokenV2.sol

@@ -2,9 +2,11 @@
 pragma solidity ^0.8.0;
 
 import {ERC20Upgradeable, ERC20PermitUpgradeable} from 'openzeppelin-contracts-upgradeable/contracts/token/ERC20/extensions/ERC20PermitUpgradeable.sol';
+import {IERC20Metadata} from '@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol';
 import {PausableUpgradeable} from 'openzeppelin-contracts-upgradeable/contracts/utils/PausableUpgradeable.sol';
 import {IPermissionlessRescuable, PermissionlessRescuable} from 'solidity-utils/contracts/utils/PermissionlessRescuable.sol';
 import {IRescuableBase, RescuableBase} from 'solidity-utils/contracts/utils/RescuableBase.sol';
+import {IERC20Permit} from '@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol';
 
 import {IACLManager} from '../../../core/contracts/interfaces/IACLManager.sol';
 import {ERC4626Upgradeable, ERC4626StataTokenUpgradeable, IPool, Math, IERC20} from './ERC4626StataTokenUpgradeable.sol';
@@ -80,7 +82,20 @@ contract StataTokenV2 is
  return IACLManager(POOL_ADDRESSES_PROVIDER.getACLManager()).isEmergencyAdmin(actor);
  }
 
- function decimals() public view override(ERC20Upgradeable, ERC4626Upgradeable) returns (uint8) {
+ ///@inheritdoc IERC20Permit
+ function nonces(
+ address owner
+ ) public view virtual override(ERC20PermitUpgradeable, IERC20Permit) returns (uint256) {
+ return super.nonces(owner);
+ }
+
+ ///@inheritdoc IERC20Metadata
+ function decimals()
+ public
+ view
+ override(IERC20Metadata, ERC20Upgradeable, ERC4626Upgradeable)
+ returns (uint8)
+ {
  /// @notice The initialization of ERC4626Upgradeable already assures that decimal are
  /// the same as the underlying asset of the StataTokenV2, e.g. decimals of WETH for stataWETH
  return ERC4626Upgradeable.decimals();

src/periphery/contracts/static-a-token/interfaces/IStataTokenV2.sol

@@ -3,8 +3,10 @@ pragma solidity ^0.8.0;
 
 import {IERC4626StataToken} from './IERC4626StataToken.sol';
 import {IERC20AaveLM} from './IERC20AaveLM.sol';
+import {IERC4626} from '@openzeppelin/contracts/interfaces/IERC4626.sol';
+import {IERC20Permit} from '@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol';
 
-interface IStataTokenV2 is IERC4626StataToken, IERC20AaveLM {
+interface IStataTokenV2 is IERC4626, IERC20Permit, IERC4626StataToken, IERC20AaveLM {
  /**
  * @notice Checks if the passed actor is permissioned emergency admin.
  * @param actor The reward to claim

tests/periphery/static-a-token/ERC4626StataTokenUpgradeable.t.sol

@@ -60,7 +60,7 @@ contract ERC4626StataTokenUpgradeableTest is TestnetProcedures {
  assertEq(erc4626Upgradeable.previewRedeem(shares), assets);
  }
 
- function test_totalAssets_shouldbeZeroOnZeroSupply() external {
+ function test_totalAssets_shouldbeZeroOnZeroSupply() external view {
  assertEq(erc4626Upgradeable.totalAssets(), 0);
  }