return new OtherBean(prop: "[\$value]")
                }
            }

            class OtherBean implements Serializable {
                String prop

                private Object writeReplace() {
                    return new Placeholder(value: prop)
                }
            }

            class SomeBean {
                OtherBean value
            }

      if (isFinite(mean) && isFinite(otherMean)) {
        // This is a generalized version of the calculation in add(double) above.
        double delta = otherMean - mean;
        mean += delta * otherCount / count;
        sumOfSquaresOfDeltas += otherSumOfSquaresOfDeltas + delta * (otherMean - mean) * otherCount;
      } else {
        mean = calculateNewMeanNonFinite(mean, otherMean);
        sumOfSquaresOfDeltas = NaN;
      }

      if (isFinite(mean) && isFinite(otherMean)) {
        // This is a generalized version of the calculation in add(double) above.
        double delta = otherMean - mean;
        mean += delta * otherCount / count;
        sumOfSquaresOfDeltas += otherSumOfSquaresOfDeltas + delta * (otherMean - mean) * otherCount;
      } else {
        mean = calculateNewMeanNonFinite(mean, otherMean);
        sumOfSquaresOfDeltas = NaN;
      }