Bug 98472 New project wizard: second page remove from class path should ask for removal of folder when linked
RC1 - create a new project - switch to the second page - link in additional source observe: there is no way to unlink the addtional source We should offer to unlink the folder when the folder is removed from the build path again.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/newsourcepage/ClasspathModifierQueries.java
public OutputFolderValidator(List newElements, IJavaProject project) throws JavaModelException {
            fEntries= project.getRawClasspath();
            fElements= newElements;
        }
        
        /**
         * The path of the output location to be validated. The path 
         * should contain the full path within the project, for example: 
         * /ProjectXY/folderA/outputLocation.
         * 
         * @param outputLocation the output location for the project
         * @return <code>true</code> if the output location is valid, 
         * <code>false</code> otherwise.
         */
        public abstract boolean validate(IPath outputLocation);
    }
    
    /**
     * Query that processes the request of 
     * creating a link to an existing source 
     * folder.
     */
    public static interface ILinkToQuery {
        /**
         * Query that processes the request of 
         * creating a link to an existing source 
         * folder.
         * 
         * @return <code>true</code> if the query was 
         * executed successfully (that is the result of