docs: def genl_ctrl_resolve_grp(sk, family_name, grp_name):
      """Resolve Generic Netlink family group name.
  
      https://github.com/thom311/libnl/blob/libnl3_2_25/lib/genl/ctrl.c#L471
  
      Looks up the family object and resolves the group name to the numeric group identifier.
  
      Positional arguments:
      sk -- Generic Netlink socket (nl_sock class instance).
      family_name -- name of Generic Netlink family (bytes).
      grp_name -- name of group to resolve (bytes).
  
      Returns:
      The numeric group identifier or a negative error code.
      """
      family = genl_ctrl_probe_by_name(sk, family_name)
      if family is None:
          return -NLE_OBJ_NOTFOUND
      return genl_ctrl_grp_by_name(family, grp_name)