'Return the account, container and object name for the request,
if it\'s an object request and one of the configured methods;
otherwise, None is returned.
:param env: The WSGI environment for the request.
:returns: (Account str, container str, object str) or
(None, None, None).'

def _get_path_parts(self, env):

    if (env['REQUEST_METHOD'] in self.conf['methods']):
        try:
            (ver, acc, cont, obj) = split_path(env['PATH_INFO'], 4, 4, True)
        except ValueError:
            return (None, None, None)
        if ((ver == 'v1') and obj.strip('/')):
            return (acc, cont, obj)
    return (None, None, None)
