"Optional.get() cannot be called on an absent value exception" during NovaApi.getVolumeAttachmentExtensionForZone ( region ).get()

[Apoorva Deshpande]

Hello,

I am trying following which is resulting in error, in case of Liberty release.

Code:
novaVolAttachApi = (VolumeAttachmentApi) 
novaApi.getVolumeAttachmentExtensionForZone( region ).get();

Exception:
java.lang.IllegalStateException: Optional.get() cannot be called on an absent 
value


I am using jclouds 1.8 release jars and did not see this issue with Juno, Kilo.
Above exception is seen against Liberty, Mitaka OpenStack clouds.

Please let me know if you have encountered this issue.

Thanks,
Apoorva