This is our 2018 codebase, built on top of OpenRC-turbo (which itself is built on ftc-app) with DogeCV.
There needs to be a class-level String named VUFORIA_KEY in a class named VuforiaKeyClass in the TeamCode folder containing the Vuforia API key.
As per right now, the stock build variant does not support instant run, however, the turbo/debug one does.