/// <summary>
/// Method for determining if one or more calculations in a calculation group have output.
/// </summary>
/// <param name="calculationGroup">The calculation group to check the output for.</param>
/// <returns><c>true</c> if one or more calculations in the calculation group have output, <c>false</c> otherwise.</returns>
/// <remarks>The calculation group is enumerated recursively, also taking into account nested calculations.</remarks>
public static bool HasOutput(this CalculationGroup calculationGroup)
{
return(calculationGroup.GetCalculations().Any(c => c.HasOutput));
}