code: public static HijriAdjustment of(
          VariantSource variantSource,
          int adjustment
      ) {
  
          return HijriAdjustment.of(variantSource.getVariant(), adjustment);
  
      }
docs: /*[deutsch]
  <p>Definiert eine Verstellung der angegebenen Variante des Hijri-Kalenders in Tagen. </p>
  
  @param   variantSource   source of variant
  @param   adjustment      small adjustment in days between -3 and 3 (inclusive)
  @return  new instance of {@code HijriAdjustment}
  @throws  ChronoException if the adjustment is out of range {@code -3 <= adjustment <= 3}