I am trying to develop a sample Provider Hosted Add-In in Visual Studio 2013, using an ASP.Net Forms. I pointed it to the certificate location and the password, when prompted. I followed the steps mentioned in the link below to create the same.

https://msdn.microsoft.com/en-us/library/jj687470.aspx

Now, I am trying to understand, how it gets the User Access Tokens for App Web and Host Web. I do see these properties in SharePointContext.cs file, but when I put break point to understand how the Context gets these tokens, it never seems to hit the appropriate break points and hence I am unable to understand how it gets these tokens. Can anyone please gui