I'm curious. If I were to be running a heavy task that performs a lot of stuff outside the Minecraft Server, such as manipulating the OS file system. How would I go about doing that task, and when it's complete sending the player the response produced by the task. I notice async tasks should not access the API, I assume this includes sending a user a message. Can someone direct me how I could perform any sort of heavy computation/scripts and get their response (which would take time)?