Download a file from S3

[cod3licious]

I'm trying to download a PDF file from an S3 bucket. My best guess for how to do that was the following syntax:

import streamlit as st
from st_files_connection import FilesConnection

conn = st.experimental_connection("s3", type=FilesConnection)
with conn.open(
     "my-s3-bucket/path/to/file.pdf",
      mode="rb",
) as file:
      st.download_button(
          label="📥 Download (PDF)",
          data=file,
          file_name="my_file.pdf",
          mime="application/pdf",
          key="download-pdf",
      )

But I'm getting a RuntimeError: Invalid binary data format: <class 's3fs.core.S3File'>

Anything I'm doing wrong or is this functionality just not supported yet?