TokenTransfers

function snapshot(address token, address from, address to) internal view returns (Balances memory balances);

function verify(address token, address from, address to, uint256 amount, Balances memory before) internal view;

function transferFrom(address token, address from, address to, uint256 amount) internal;

function verifyDebit(address token, address from, uint256 amount, uint256 before) internal view;

function transfer(address token, address to, uint256 amount) internal;

function bubbleUnsupported(bytes memory reason) internal pure;

function take(IPoolManager manager, Currency currency, address to, uint256 amount) internal;

error TokenNotSupported(address token);

struct Balances {
        uint256 from;
        uint256 to;
    }