| Class | Description | 
|---|---|
| SystemLogHandler | This helper class may be used to do sophisticated redirection of
 System.out and System.err on a per Thread basis. | 
| UserDataHelper | This helper class assists with the logging associated with invalid input
 data. | 
| Enum | Description | 
|---|---|
| UserDataHelper.Mode | Log mode for the next log message. | 
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