How download the RollupDS.txt from instructor notes?

Hi everyone,

I was following the steps from the IoTUModel1_Exercises.pdf, of the course IoT MOdeling 1 With ThingWorx, but in the step 221e, I am not able to download the file RollupDS.txt.

In the pdf file puts "from the instructor notes" but I am not able to recognize this tool...

Thanks in advance & Regards

Victor