I have an existing django webapp, I have two model classes in my models.py for different functionalities in my app. I have used django allauth for all of the login/logout/social sign ins. Note: I have not used django rest framework at all so far in creating my app. Now, I have to do the same for the android version of my webapp using Java. What exactly do I need to do right now to create the rest APIs and then connect them to the android app? please give some suggestions