Gets expiration date.
PRL_RESULT PrlVmCfg_GetExpirationDate( PRL_HANDLE hVmCfg, PRL_STR sExpirationDateBuf, PRL_UINT32_PTR pnExpirationDateBufLength );
PrlApiVm.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle was passed.
PRL_ERR_SUCCESS - function completed successfully.