This is a hack for an issue that we plan to fix. The `tools/preload` generator does not dump any items loaded by `ClassLoaders` other than the default `ClassLoader`, which results in the large number of files that you see going across the network.

In a future version of the tool, the `list-class-cache` option will probably be changed to output the *files* that the given command processes rather than the *classes* -- regardless of `ClassLoader`. We don't do this now because we do not track the provenance of the classes loaded by all `ClassLoader` objects. I hope to fix this after the new FS API is hooked up to Doppio.