// `ether()` converts a number to 1e18
await feeExtensionInstance.connect(operator.wallet).initializeIssuanceModule(
ether(.1), // Max manager fee = 10%
ether(.01), // Manager issue fee = 1%
ether(.005), // Manager redeem fee = .5%
feeExtensionInstance.address // Set this extension address as the pre-distribution recipient of all fees
ADDRESS_ZERO // Issuance hook contract, if applicable