FileStorageApi.Container.list_files

You're seeing just the function list_files, go back to FileStorageApi.Container module for more information.
Link to this function

list_files(container_name, options \\ [])

Specs

list_files(String.t(), options()) :: Enumerable.t()

List all files in the container.

Options are available for max_results: which can be adjusted.

It's build around stream so will automatically use the markers to get as many items as are in the bucket.