Hello. I have a question about a specific case for efficiency vs storage on plugins (and in general). Lets say I have a HashMap with locations as keys and Machines as values. This allows me to have constant retrieval time from the map for Machines when a user clicks on a location. But if I want to get a Machine based on the owner, I can't have constant retrieval time from the HashMap unless I create another identical HashMap with player UUIDs as keys and Machines as values. Basically, it is a question on storage vs efficiency. Any thoughts? Maybe not just in this example, but just in general as well. Thanks! Is there a better data structure to use than HashMap for this case?