Trove: High Performance Collections for Java http://trove.starlight-systems.com/

perflib and Android Studio use trove4j “1.1 (with patches from JetBrains)” which isn't available on Maven Central.

The trove4j-1.1-sources.jar-unzipped_flattened directory was created the following way:

• Check out the Android platform/prebuilts/tools repository at commit 3fde540f482afc68b847f8e85672acc145606ffe
• common/m2/repository/net/sf/trove4j/trove4j/1.1 contains trove4j-1.1-sources.jar
• Unzip trove4j-1.1-sources.jar
• Merge core/src/gnu/trove and generated/src/gnu/trove in one source folder.