} catch (ComponentLookupException e) {
            Throwable cause = e.getCause();
            while (cause != null && !(cause instanceof LinkageError) && !(cause instanceof ClassNotFoundException)) {
                cause = cause.getCause();
            }

            if ((cause instanceof NoClassDefFoundError) || (cause instanceof ClassNotFoundException)) {

FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

            // The root locator can be used very early during the setup of Maven,
            // even before the arguments from the command line are parsed.  Any exception
            // that would happen here should cause the build to fail at a later stage
            // (when actually parsing the POM) and will lead to a better exception being
            // displayed to the user, so just bail out and return false.
        }
        return false;

                "Non-unique repository ids did not cause validation error");
    }

    /* MNG-4193 */
    @Test
    void testValidationErrorUponNonUniquePluginRepositoryId() throws Exception {
        assertThrows(
                ProjectBuildingException.class,
                () -> buildPom("unique-repo-id/plugin-repo"),
                "Non-unique repository ids did not cause validation error");
    }

    }

    /**
     * Creates a new exception with specified cause
     *
     * @param cause
     * @param groupId
     * @param artifactId
     * @param version
     */
    public ModelResolverException(Throwable cause, String groupId, String artifactId, String version) {
        super(cause);
        this.groupId = groupId;
        this.artifactId = artifactId;
        this.version = version;

        } catch (Exception e) {
            Throwable cause = e.getCause();
            if (cause instanceof ModelBuildingException) {
                String message = "In: " + pom + "\n\n";
                for (ModelProblem problem : ((ModelBuildingException) cause).getProblems()) {
                    message += problem + "\n";
                }

                Map<File, MavenProject> projectIndex, List<InterimResult> interimResults) {
            // The transformation may need to access dependencies raw models,
            // which may cause some re-entrance in the build() method and can
            // actually cause deadlocks.  In order to workaround the problem,
            // we do a first pass by reading all rawModels in order.
            List<ProjectBuildingResult> results = new ArrayList<>();

throws java.io.IOException; static void <clinit>(); } org/codehaus/plexus/util/ExceptionUtils.class package org.codehaus.plexus.util; public synchronized class ExceptionUtils { static final String WRAPPED_MARKER = [wrapped] ; protected static String[] CAUSE_METHOD_NAMES; protected void ExceptionUtils(); public static void addCauseMethodName(String); public static Throwable getCause(Throwable); public static Throwable getCause(Throwable, String[]); public static Throwable getRootCause(Throwable); private...

                .newSession(session));

        legacySupport.setSession(session);
    }

    protected abstract String component();

    /**
     * Return an existing file, not a directory - causes creation to fail.
     *
     * @throws Exception
     */
    protected ArtifactRepository badLocalRepository() throws Exception {

        } catch (Exception e) {
            Throwable cause = e.getCause();
            if (cause instanceof ModelBuildingException) {
                String message = "In: " + pom + "\n\n";
                for (ModelProblem problem : ((ModelBuildingException) cause).getProblems()) {
                    message += problem + "\n";
                }