```
public interface LinkCheckerExtension
```
The LinkCheckerExtension interface defines a plugin for the LinkChecker. This allows to extend the link checking through custom link checking mechanisms. The link checker queries all extensions in no particular order as long as the extensions return a valid link validity. As soon as the first extension returns a different value, this value is returned.

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`LinkValidity`	`getLinkValidity(Resource resource)`	This method checks if the passed resource is a valid resource.

Interface LinkCheckerExtension