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feat: add FeeToken interface #3

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feat: add FeeToken interface #3

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10 changes: 10 additions & 0 deletions src/FeeToken.sol
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// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.8.13 <0.9.0;

/// @title FeeToken
/// @author NASD Inc.
/// @notice An interface that must be implemented by any ERC20 that wants to be a supported fee token on Noble.
interface FeeToken {
/// @notice Allows the system address to transfer tokens from one address to another.
function systemTransfer(address from, address to, uint256 amount) external returns (bool);
}