Hey @joseluizferreira! Thanks for the background there!
session_stop on a static file is potentially rife with extreme outliers as many users (myself included) leave static files open in a browser tab for long periods of time. This is also the reason that we have not done more work to this end in the product - it is data that has the potential to be high in volume and low in value.
Rather, when a user "refreshes the page," for instance, then you get a new "content hit" that shows the user has requested the file again.