Welcome to your interview.
The question is on your right: Retrofit REST Integration. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
Implement REST API integration using Retrofit, and optionally implement dependency injection and best user interface practices.