LMS-1541 minor: javadoc

SVN: 16508

openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/columns/framework/AbstractColumnDefinitionKind.java

@@ -131,6 +131,7 @@ public abstract class AbstractColumnDefinitionKind<T>
         return SimpleYesNoRenderer.render(invalidationProvider.getInvalidation() != null);
     }
 
+    /** to be overriden by subclasses */
     public String tryGetLink(T entity)
     {
         return null;