code: public boolean isAvailable(Locale locale, String... providers) {
          return isAvailable(AmountFormatQuery.of(locale, providers));
      }
docs: Checks if a {@link javax.money.format.MonetaryAmountFormat} is available given a {@link javax.money.format
  .AmountFormatQuery}.
  
  @param locale    the target {@link java.util.Locale}, not {@code null}.
  @param providers The (optional) providers to be used, ordered correspondingly.
  @return true, if a t least one {@link javax.money.format.MonetaryAmountFormat} is matching the query.