UAST
----
Check out UAST from https://github.com/JetBrains/uast

To generate UAST:
./gradlew clean assemble sourceJar

Then copy into prebuilts/tools/common/uast these libraries:
cp \
   uast-common/build/libs/uast-common-1.0.jar \
   uast-java/build/libs/uast-java-1.0.jar \
   uast-common/build/libs/uast-common-1.0-sources.jar \
   uast-java/build/libs/uast-java-1.0-sources.jar \
   $TOOLS_ROOT/prebuilts/tools/common/uast

The current versions were built from the head at
951b7e299a6eb604599ef5c8e5521bcbf5345ea6