function testFallbackWithTransferPlugin() public {
    bytes memory data = setUpExecute(alice);

    // install transfer from on vault
    address[] memory plugins = new address[](1);
    bytes4[] memory selectors = new bytes4[](1);

    plugins[0] = address(transferTarget);
    selectors[0] = transferTarget.ERC721TransferFrom.selector;
    vaultProxy.install(selectors, plugins);

    // set bob as the owner
    vaultProxy.transferOwnership(bob.addr);

    // check vault originally has the nft
    assertEq(IERC721(erc721).balanceOf(vault), 1);
    assertEq(IERC721(erc721).balanceOf(alice.addr), 0);

    // execute the nft transfer via plugin with fallback
    (bool success,) = address(vaultProxy).call(data);

    // check this contract transferred nft out of vault to alice
    // even after bob became owner
    assertEq(IERC721(erc721).balanceOf(vault), 0);
    assertEq(IERC721(erc721).balanceOf(alice.addr), 1);
} 
/// @notice Mapping of function selector to plugin address
mapping(bytes4 => address) public methods;

/// @notice Mapping of plugin address to whether permissions required
mapping(address => bool) public auths;
