How to implement the Reader interface?

Hi, for my game, I’m trying to implement an efficient asset streaming pipelines, that leverages the Io interface, for concurrent, mmaped positional reads, of multiple files. I’m close to finishing, and I’d like the final output to be basically a list of files, with their respective readers interface, that would under the hood hydrate the available data, by consuming the FileChuncks of that file (a mini struct with an offset/len, built ahead of time). The thing that I want to know, is what is the...