code: public boolean isConversionAvailable(CurrencyUnit termCurrency, String... providers) {
          return isConversionAvailable(
                  ConversionQueryBuilder.of().setTermCurrency(termCurrency).setProviderNames(providers).build());
      }
docs: Allows to quickly check, if a {@link javax.money.convert.CurrencyConversion} is accessible for the given
  {@link javax.money.convert.ConversionQuery}.
  
  @param termCurrency the terminating/target currency unit, not null.
  @param providers    the provider names defines a corresponding
  provider chain that must be encapsulated by the resulting {@link javax
  .money.convert.CurrencyConversion}. By default the provider
  chain as defined by #getDefaultRoundingProviderChain will be used.
  @return {@code true}, if such a conversion is supported, meaning an according
  {@link javax.money.convert.CurrencyConversion} can be
  accessed.
  @see #getConversion(javax.money.convert.ConversionQuery)
  @see #getConversion(javax.money.CurrencyUnit, String...)}