---
title: trailer
framework: Hypervisor
role: symbol
role_heading: Instance Property
path: hypervisor/hv_ion_message_t/trailer
---

# trailer

The Mach message trailer.

## Declaration

```swift
var trailer: mach_msg_trailer_t
```

## See Also

### Instance properties

- [addr](hypervisor/hv_ion_message_t/addr.md)
- [header](hypervisor/hv_ion_message_t/header.md)
- [size](hypervisor/hv_ion_message_t/size.md)
- [value](hypervisor/hv_ion_message_t/value.md)