am 4d5e9058: am 5ac8842b: am c9dca45a: am c9217022: am 911c8806: am eeea76c2: am 176d0c68: am a6dfbaf0: am ca789a98: Merge "docs: Code sample for game controller training class." into jb-mr2-docs

* commit '4d5e9058acc843b43eacf3c68dc4dfa43a08ff16':
  docs: Code sample for game controller training class.