*
 * TODO it may be better for artifact.getFile() to throw it - perhaps it is a runtime exception?
 */
public class DependencyResolutionRequiredException extends Exception {
    public DependencyResolutionRequiredException(Artifact artifact) {
        super("Attempted to access the artifact " + artifact + "; which has not yet been resolved");
    }

     * @return paths of all artifacts placed on the classpath
     * @throws DependencyResolutionRequiredException if an artifact file is used, but has not been resolved
     */
    private List<String> getClasspathElements(final Predicate<String> scopeFilter, final boolean includeTestDir)
            throws DependencyResolutionRequiredException {
        final List<String> list = new ArrayList<>(getArtifacts().size() + 2);