# File lib/fog/vsphere/requests/compute/vm_power_off.rb, line 6
        def vm_power_off(options = {})
          options = { 'force' => false }.merge(options)
          raise ArgumentError, "instance_uuid is a required parameter" unless options.has_key? 'instance_uuid'

          search_filter = { :uuid => options['instance_uuid'], 'vmSearch' => true, 'instanceUuid' => true }
          vm_mob_ref = @connection.searchIndex.FindAllByUuid(search_filter).first

          if options['force'] then
            task = vm_mob_ref.PowerOffVM_Task
            task.wait_for_completion
            { 'task_state' => task.info.result, 'power_off_type' => 'cut_power' }
          else
            vm_mob_ref.ShutdownGuest
            {
              'task_state'     => "running",
              'power_off_type' => 'shutdown_guest',
            }
          end
        end