IMarker (org.faktorips.runtime 21.6.0-SNAPSHOT API)

```
public interface IMarker
```
The implementation of this interface is used to provide additional information for an Message.
Currently there are two standard situations markers are expected to be used in (see isRequiredInformationMissing() and isTechnicalConstraintViolated()). Implementers are free to use markers for other purposes.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`isRequiredInformationMissing()`	Returns whether the marked `Message` is stating that required information is missing.
`boolean`	`isTechnicalConstraintViolated()`	Returns whether the marked `Message` is stating that a technical constraint (like for example a database column length) is violated.

- Method Detail
  - isRequiredInformationMissing
```
boolean isRequiredInformationMissing()
```
    Returns whether the marked Message is stating that required information is missing. In most cases the missing information is a value for an attribute or an association's target and should be discernible from the Message's InvalidObjectProperties.
    
    Returns:
    
    true if the marked message indicates that required information is missing, otherwise false
  - isTechnicalConstraintViolated
```
boolean isTechnicalConstraintViolated()
```
    Returns whether the marked Message is stating that a technical constraint (like for example a database column length) is violated. The property the constraint applies to should be discernible from the Message's InvalidObjectProperties.
    
    Returns:
    
    true if the marked message indicates that some technical constraints are violated, otherwise false