Contains the main Multiverse STM Implementation: the Alpha Engine. The Alpha engine supports readonly and update transactions. It also supports the retry/or else mechanism. This not the jar you want to have in your final distribution because it isn't instrumented (hence the name unborn). The jar you eventually want to have in your distribution is the multiverse-alpha jar. What this package does, is test the instrumentation for the Javaagent. The compiletime instrumentation is tested in the multiverse-alpha package (where all tests are copied and reexecuted but now with compiletime instrumentation).