I often hear tech writers in developer doc say they don't use a lot of visuals because users just want code samples. While code samples certainly connect well with users, there's also room to clarify difficult concepts through conceptual illustrations. The Android Vocabulary Glossary provides a perfect example of this.
This visual is actual a looping gif animation that provides an interesting, unique way of explaining getter and setter methods.
I’m blown away by the quality of these visuals. Someone with serious talent created a useful glossary like none I’ve ever seen. A lot of the vocabulary terms are also supplemented with code samples as well.