[question] Request for docs: conan_server StorageAdapter

https://docs.conan.io/en/latest/uploading_packages/running_your_server.html mentions

> Conan has implemented an extensible storage backend based on the abstract class StorageAdapter. Currently, the server only supports storage on disk. The folder in which the uploaded packages are stored (i.e., the folder you would want to backup) is defined in the disk_storage_path.

Where can I find more documentation on the `StorageAdapter` interface? I did not find it in the source under https://github.com/conan-io/conan/tree/develop/conans/server/store.

Any help is appreciated :)