vCloud and VC plug-ins don't know about each other so there is no direct conversion.
One possible way to get VcHostSystem object matching that VclVMWHost object is:
- Using VcPlugin.getAllHostSystems(null,null) API, get the list of available VC hosts
- Iterate over this list and get the element whose id matched the id of the provided VclVMWHost object
I don't have a working vCloud environment in front of me right now so I can't check the above, but in theory it should work.
Note that VcPlugin.getAllHostSystem() API has 2 parameters which should allow to narrow the search results, but I don't remember the exact syntax for them; for now, you can pass null in both, and the call will return all hosts.
Hope this helps,
-Ilian