def _ssh_get_issue_banner(ssh_session):
message = c_ssh_get_issue_banner(c_void_p(ssh_session))<EOL>DO: Does "<STR_LIT>" string have to be freed? We might have to reallocate it as a Python string.<EOL>if message is None:<EOL><INDENT>return '<STR_LIT>'<EOL><DEDENT>return stringify(message)<EOL>
Get the "issue banner" for the server. Note that this function may/will
    fail if the server isn't configured for such a message (like some/all
    Ubuntu installs). In the event of failure, we'll just return an empty 
    string.