RequiredTimeDuration (formcycle: bom 8.1.1 API)

```
@Documented
@Constraint(validatedBy=RequiredTimeDurationValidator.class)
@Target({METHOD,FIELD,ANNOTATION_TYPE,CONSTRUCTOR,PARAMETER,TYPE_USE})
@Retention(RUNTIME)
@Repeatable(List.class)
public @interface RequiredTimeDuration
```
Constraint validation that may be applied to TimeDuration. Checks that the duration has a value, i.e. that TimeDuration.getDuration() is not null.
This does not check whether the TimeDuration instance is non-null, use NotNull for that.

Since:

8.1.0

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`Class<?>[]`	`groups`
`String`	`message`	Gets the key for creating error messages in case the constraint is violated.
`Class<? extends javax.validation.Payload>[]`	`payload`

- Element Detail
  - groups
```
Class<?>[] groups
```
    Returns:
    
    Allows the specification of validation groups, to which this constraint belongs. When not specified, the constraint is placed in the Default group.
    
    Default:
    
    {}
- - message
```
String message
```
    Gets the key for creating error messages in case the constraint is violated. When not empty, takes precedence over all other message keys.
    
    Returns:
    
    The default key for creating error messages in case the constraint is violated.
    
    Default:
    
    "{de.xima.fc.validation.constraints.RequiredTimeDuration.message}"
- - payload
```
Class<? extends javax.validation.Payload>[] payload
```
    Returns:
    
    The payload that can be used by clients of the Jakarta Bean Validation API to assign custom payload objects to a constraint.
    
    Default:
    
    {}