//SPDX-License-Identifier: MIT
/// @param customer The address of the customer who made the payment
/// @param tokenID The id of the ERC721 token the customer paid for
/// @param amount The amount in customer paid for the item
function processPayment(address customer, uint256 tokenID, uint256 amount) external {
//require(msg.sender == ) IMPORTANT!! check that sender is the correct mToken contract.
* Write code to perform additional task after receiving payment
* such as sending NFTs and checking the amount sent.