docs: public void subtract(final DoubleHistogram otherHistogram) {
          int arrayLength = otherHistogram.integerValuesHistogram.countsArrayLength;
          AbstractHistogram otherIntegerHistogram = otherHistogram.integerValuesHistogram;
          for (int i = 0; i < arrayLength; i++) {
              long otherCount = otherIntegerHistogram.getCountAtIndex(i);
              if (otherCount > 0) {
                  double otherValue = otherIntegerHistogram.valueFromIndex(i) *
                          otherHistogram.integerToDoubleValueConversionRatio;
                  if (getCountAtValue(otherValue) < otherCount) {
                      throw new IllegalArgumentException("otherHistogram count (" + otherCount + ") at value " +
                              otherValue + " is larger than this one's (" + getCountAtValue(otherValue) + ")");
                  }
                  recordValueWithCount(otherValue, -otherCount);
              }
          }
      }