def METHOD_NAME(self, line):
    """
    Interprets the input *line* as command line arguments to the ``law`` executable and runs
    it in a subprocess using bash. Output and error streams are piped to the cell.
    """
    line = line.strip()
    if not line:
        logger.error(r"the command passed to %law must not be empty")
        return
    # build the full command
    cmd = "law " + line
    if line_cmd:
        cmd = "{} && {}".format(line_cmd, cmd)
    logger.debug("running law command '{}'".format(cmd))
    # run it
    return self._run_bash(cmd)