jclouds/jclouds — pull request #305 by andreaturli (2012-01-11 00:25:08+00:00)
Title: issue 384 MutableMachine and 

the interesting part are in:

sandbox-apis/virtualbox/src/main/java/org/jclouds/virtualbox/functions/MutableMachine.java
sandbox-apis/virtualbox/src/main/java/org/jclouds/virtualbox/util/MachineUtils.java
sandbox-apis/virtualbox/src/test/java/org/jclouds/virtualbox/BaseVirtualBoxClientLiveTest.java

MachineUtils still contains the old implementation (static method) to not change all the code dependent.
MachineUtils.unlockMachine is unstable