How to get BIOS UUID of VM using vcloud director API

In our project, Virtual machine comes from various sources, One source brings VM with unique identifier as BIOS UUID. and the other source is using Vcloud director API. We cannot change former source to bring any other identifier,

So I just wanted to know if is there a way to bring BIOS UUID of VM using vcloud API.

I have alredy gone through links:

http://blogs.vmware.com/vsphere/2012/02/uniquely-identifying-virtual-machines-in-vsphere-and-vcloud-part-1-overview.html

http://blogs.vmware.com/vsphere/2012/02/uniquely-identifying-virtual-machines-in-vsphere-and-vcloud-part-2-technical.html