Track (Axelor Open Platform 7.2.3 API)

```
@Documented
@Target(TYPE)
@Retention(RUNTIME)
public @interface Track
```
This annotation can be used on Model classes to provide change track details.

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`TrackMessage[]`	`contents`	The body content to generate.
`TrackField[]`	`fields`	The fields to track.
`boolean`	`files`	Whether to track attached files.
`TrackMessage[]`	`messages`	The track messages to generate.
`TrackEvent`	`on`	Specify the event on which to track.
`boolean`	`subscribe`	Subscribe for change notifications.

- Element Detail
  - fields
```
TrackField[] fields
```
    The fields to track.
    
    Returns:
    
    the fields to track
    
    Default:
    
    {}
- - messages
```
TrackMessage[] messages
```
    The track messages to generate.
    
    Returns:
    
    the messages
    
    Default:
    
    {}
- - contents
```
TrackMessage[] contents
```
    The body content to generate.
    
    Returns:
    
    the body messages
    
    Default:
    
    {}
- - subscribe
```
boolean subscribe
```
    Subscribe for change notifications.
    
    Returns:
    
    true if marked for auto-subscribe
    
    Default:
    
    false
- - files
```
boolean files
```
    Whether to track attached files.
    
    Returns:
    
    true if marked for tracking attachments
    
    Default:
    
    false
- - on
```
TrackEvent on
```
    Specify the event on which to track.
    
    Returns:
    
    the event
    
    Default:
    
    com.axelor.db.annotations.TrackEvent.ALWAYS