docs: public int[] getPartialValues(ReadablePartial fieldSource, Object object, Chronology chrono) {
          ReadablePartial input = (ReadablePartial) object;
          int size = fieldSource.size();
          int[] values = new int[size];
          for (int i = 0; i < size; i++) {
              values[i] = input.get(fieldSource.getFieldType(i));
          }
          chrono.validate(fieldSource, values);
          return values;
      }