The style, nomenclature, choice of vocabulary are those of someone who has spent a lot of time with Android Java. E.g. see this: https://developer.android.com

The style, nomenclature, choice of vocabulary are those of someone who has spent a lot of time with Android Java. E.g. see this: https://developer.android.com/training/basics/firstapp/starting-activity#java https://developer.android.com/training/basics/firstapp/start... Compare it to OP's framework documentation.