code: @SuppressWarnings({"squid:SwitchLastCaseIsDefaultCheck", "squid:S1301"})
      public Locale getLand() {
          String country = this.getUnformatted().substring(0, 2);
          String language = country.toLowerCase();
          switch (country) {
              case "AT":
              case "CH":
                  language = "de";
                  break;
          }
          return new Locale(language, country);
      }
docs: Liefert das Land, zu dem die IBAN gehoert.
  
  @return z.B. "de_DE" (als Locale)
  @since 0.1.0