How should I activate?

Hello, I am kinda new to all this programming. I have my license key, but how do I activate it? In what directory should I be to call the function:

RecFusionSDK::activate("XXXXX-XXXXX-XXXXX-XXXXX-XXXXX");

Thanks in advance!

If you are trying to activate the RecFusion SDK, then you can use one of the provided samples (for example ConsoleReconstruction), replace
XXXXX-XXXXX-XXXXX-XXXXX-XXXXX with your license code, compile and execute the program