/// <summary>
///     If variable striping mode is enabled, advances the state of the selection CSPRNG,
///     and returns the output to be used as the length of the next operation.
///     Otherwise, fixed length is returned.
/// </summary>
/// <returns>Operation length to perform.</returns>
private int NextOperationLength()
{
    int operationLength = _stripeMode == FabricStripeMode.VariableLength
        ? EntropySource.Next(_minStripe, _maxStripe)
        : _maxStripe;

    Debug.Print(DebugUtility.CreateReportString("FabricPayloadMux", "NextOperationLength", "Generated stripe length value",
        operationLength));

    return operationLength;
}