public bool TryCalcRequiredDiskCapacity(out ulong capacity)
{
capacity = 0;
if (file == null)
{
return(false);
}
VirtualDiskDesc_Type disk = OVF.FindDiskReference(envelope, rasd);
capacity = disk != null && !string.IsNullOrEmpty(disk.capacity)
? Convert.ToUInt64(OVF.ComputeCapacity(Convert.ToInt64(disk.capacity), disk.capacityAllocationUnits))
: file.size;
return(true);
}