DefaultExceptionHandler handler = new DefaultExceptionHandler();
        ExceptionSummary summary = handler.handleException(exception);

        String expectedReference = "http://cwiki.apache.org/confluence/display/MAVEN/AetherClassNotFound";
        assertEquals(expectedReference, summary.getReference());
    }

    @Test
    void testHandleExceptionNoClassDefFoundErrorNull() {

    }

    public BuildSummary getBuildSummary(MavenProject project) {
        return buildSummaries.get(project);
    }

    public void addBuildSummary(BuildSummary summary) {
        buildSummaries.put(summary.getProject(), summary);
    }

    @Override
    public boolean canResume() {
        return canResume;
    }

    @Override
    public void setCanResume(boolean canResume) {

 - [ ] Each commit in the pull request should have a meaningful subject line and body.
 - [ ] Format the pull request title like `[MNG-XXX] SUMMARY`,
       where you replace `MNG-XXX` and `SUMMARY` with the appropriate JIRA issue.
 - [ ] Also format the first line of the commit message like `[MNG-XXX] SUMMARY`.
       Best practice is to use the JIRA issue title in both the pull request title and in the first line of the commit message.

import org.apache.maven.project.MavenProject;

/**
 * Summarizes the result of a successful project build in the reactor.
 *
 */
public class BuildSuccess extends BuildSummary {

    /**
     * Creates a new build summary for the specified project.
     *
     * @param project The project being summarized, must not be {@code null}.
     * @param time The build time of the project in milliseconds.
     */

        NONE, // mute validation completely (validation issue collection still happens, it is just not reported!)
        INLINE, // inline, each "internal" problem one line next to mojo invocation
        SUMMARY, // at end, list of plugin GAVs along with ANY validation issues
        BRIEF, // each "internal" problem one line next to mojo invocation
        // and at end list of plugin GAVs along with "external" issues

Each of these pages has three sections consisting of a class/interface description, summary tables, and detailed member descriptions: Class inheritance diagram Direct Subclasses All Known Subinterfaces All Known Implementing Classes Class/interface declaration Class/interface description Nested Class Summary Field Summary Constructor Summary Method Summary Field Detail Constructor Detail Method Detail Each summary entry contains the first sentence from the detailed description for that item. The summary...

  The {{{./lifecycles.html}<<<default>>> lifecycle}} is defined without any plugin binding; plugins bindings are defined separately
  in {{{./apidocs/org/apache/maven/lifecycle/providers/packaging/package-summary.html}<<<org.apache.maven.lifecycle.providers.packaging>>>}} package
  because they are specific for each packaging:

%{toc|fromDepth=2}

  Versions of the plugins are shared in a few constants:

    /**
     * Gets the build summary for the specified project.
     *
     * @param project The project to get the build summary for, must not be {@code null}.
     * @return The build summary for the project or {@code null} if the project has not been built (yet).
     */
    BuildSummary getBuildSummary(MavenProject project);

    /**
     * Add the specified build summary.
     *

 *
 */
public class BuildFailure extends BuildSummary {

    /**
     * The cause of the build failure.
     */
    private final Throwable cause;

    /**
     * Creates a new build summary for the specified project.
     *
     * @param project The project being summarized, must not be {@code null}.
     * @param time The build time of the project in milliseconds.

     */
    private final MavenProject project;

    /**
     * The build time of the project in milliseconds.
     */
    private final long time;

    /**
     * Creates a new build summary for the specified project.
     *
     * @param project The project being summarized, must not be {@code null}.
     * @param time The build time of the project in milliseconds.
     */