code: def rsync_ssh_opts(
      private_key=None, connect_timeout=None, port=None, proxy=None
  ):
      ssh_cmd = _rsync_ssh_cmd(
          private_key, connect_timeout, port, proxy
      )
      return ["-e", ssh_cmd]
  
file_path: guildai/guild/remotes/ssh_util.py
imports: import logging
  import subprocess
  from guild import remote
label_desc: Use image node_id 9 for calling a global function with example usage: rsync_ssh_opts(private_key, connect_timeout, port, proxy) and returns: list