jclouds/jclouds — pull request #905 by andrewgaul (2012-10-20 23:10:58+00:00)
Title: Prefer immutable over empty collections

The former does not create an object when calling iterator(), as
discussed here:

https://groups.google.com/d/msg/jclouds-dev/l7BviKDXreA/mP6Ow_RYxIgJ