docs: def get_rules(family='ipv4'):
      '''
      Return a data structure of the current, in-memory rules
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' nftables.get_rules
  
          salt '*' nftables.get_rules family=ipv6
  
      '''
      nft_family = _NFTABLES_FAMILIES[family]
      rules = []
      cmd = '{0} --numeric --numeric --numeric ' \
            'list tables {1}'. format(_nftables_cmd(),
                                      nft_family)
      out = __salt__['cmd.run'](cmd, python_shell=False)
      if not out:
          return rules
  
      tables = re.split('\n+', out)
      for table in tables:
          table_name = table.split(' ')[1]
          cmd = '{0} --numeric --numeric --numeric ' \
                'list table {1} {2}'.format(_nftables_cmd(),
                                            nft_family, table_name)
          out = __salt__['cmd.run'](cmd, python_shell=False)
          rules.append(out)
      return rules