code: @Override
  	public RandomVariable accrue(RandomVariable rate, double periodLength) {
  		return new RandomVariableDifferentiableAADStochasticNonOptimized(
  				getValues().accrue(rate, periodLength),
  				Arrays.asList(this, rate, new RandomVariableFromDoubleArray(periodLength)),
  				OperatorType.ACCRUE);
  	}
docs: /* (non-Javadoc)
  @see net.finmath.stochastic.RandomVariable#accrue(net.finmath.stochastic.RandomVariable, double)