ValidationCallback (SonarSource :: Language Recognizer :: Toolkit 1.24.0.633 API)

```
public interface ValidationCallback
```
This interface is used to validate values that are to be assigned to configuration properties. The Validators class provides out-of-the-box handy validators.

Since:

1.17

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  String validate(String newValueCandidate)
  Validate the new value candidate.

- Method Detail
  - validate
```
String validate(String newValueCandidate)
```
    Validate the new value candidate.
    
    Parameters:
    
    newValueCandidate - The value to be validated
    
    Returns:
    
    The empty string if validation passed, else a non-empty error message