Sometimes you will want to access a TweetNFT directly by their key. That's why we have the methods MintTweetNFT and GetTweetNFTByID. However, sometimes you will want to get every TweetNFT at once. To do this we use an Iterator called KVStorePrefixIterator. This utility comes from the sdk and iterates over a key store. If you provide a prefix, it will only iterate over the keys that contain that prefix. Since we have prefixes defined for our TweetNFT, we can use them here to only return our desired data types.
Now that you've seen the Keeper where every TweetNFT that is stored, we need to connect the messages to this storage. This process is called handling the messages and is done inside the Handler.