if (virtualGuest.getVirtualGuestBlockDevices() == null) {
return null;
}
List<BlockDevice> blockDevices = Lists.newArrayList();
for (VirtualGuestBlockDevice blockDevice : virtualGuest.getVirtualGuestBlockDevices()) {
blockDevices.add(new BlockDevice(blockDevice.getDevice(), blockDevice.getVirtualDiskImage().getCapacity()));
}
Collections.sort(blockDevices, new BlockDevicesComparator());
return ImmutableList.copyOf(blockDevices);
}