Reference (veraPDF WCAG Validation 1.20.1 API)

```
public interface Reference
```
A Reference is used to correlate a validation Rule to a specific clause in a PDF/A Specification Part.

Author:

Carl Wilson

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  String getClause()
  
  String getSpecification()

- Method Detail
  - getSpecification
```
String getSpecification()
```
    Returns:
    
    a Specification that identifies the PDF/A Specification referred to.
  - getClause
```
String getClause()
```
    Returns:
    
    a String identifier for the Specification clause referred to, e.g. 6.1.2