anchor.diff:      "platforms;android-23" \
       "platforms;android-22" \
       "platforms;android-21" \
  -    "platforms;android-20" \
       "platforms;android-19" \
       "platforms;android-17" \
       "platforms;android-15" \
  
positive.code: RUN cd /opt \
   && wget https://dl.google.com/android/repository/emulator-linux-4077558.zip -O emulator.zip \
   && unzip -q emulator.zip -d ${ANDROID_HOME} \
   && rm -f emulator.zip
  
  # SDKs
  # Please keep these in descending order!
  
negative.code:     "system-images;android-22;default;armeabi-v7a" \
      "system-images;android-21;default;armeabi-v7a" \
      "system-images;android-19;default;armeabi-v7a" \
  # Extras
      "extras;android;m2repository" \
      "extras;google;m2repository" \
  