docs: public static CurrencyConversion getConversion(CurrencyUnit termCurrency, String... providers){
          Objects.requireNonNull(providers);
          Objects.requireNonNull(termCurrency);
          if(providers.length == 0){
              return getMonetaryConversionsSpi().getConversion(
                      ConversionQueryBuilder.of().setTermCurrency(termCurrency).setProviderNames(getDefaultConversionProviderChain())
                              .build());
          }
          return getMonetaryConversionsSpi().getConversion(
                  ConversionQueryBuilder.of().setTermCurrency(termCurrency).setProviderNames(providers).build());
      }