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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def sync_to_peers(peer_interface, user, paths=None, verbose=False, cmd=None, gid=None, fatal=False):
 """Sync all hosts to an specific path The type of group is integer, it allows user has permissions to operate a directory have a different group id with the user id. Propagates exception if any operation fails and fatal=True. """

    if paths:
        for host in collect_authed_hosts(peer_interface):
            sync_to_peer(host, user, paths, verbose, cmd, gid, fatal)