wifi_connection_config_t config = {
    .ssid = "my_home_wifi",
    .password = "secret123",
    /*
      implicitly initialised to default:
      .method = CONNECT_TO_THE_FIRST_AP_THAT_RESPONDS,
    */
  }

  wifi_connection_config_t config = {
    .ssid = "my_home_wifi",
    .password = "secret123",
    /* explicitly initialise: */
      .method = CONNECT_TO_THE_AP_WITH_THE_STRONGEST_RSSI,
  }