*/
    String DEFAULT_SELF_COMBINATION_MODE = SELF_COMBINATION_MERGE;

    @Nonnull
    String getName();

    @Nonnull
    String getNamespaceUri();

    @Nonnull
    String getPrefix();

    @Nullable
    String getValue();

    @Nonnull
    Map<String, String> getAttributes();

    @Nullable
    String getAttribute(@Nonnull String name);

    @Nonnull

     * is thrown so this information is merely meant to assist the user.
     *
     * @return The identifier of the project or an empty string if not known, never {@code null}.
     */
    String getProjectId();

    /**
     * Gets the POM file from which the project was built.
     *
     * @return The POM file or {@code null} if unknown.
     */
    File getPomFile();

     */
    public MojoException(Object source, String shortMessage, String longMessage) {
        super(shortMessage);
        this.source = source;
        this.longMessage = longMessage;
    }

    /**
     * Construct a new <code>MojoExecutionException</code> exception wrapping an underlying <code>Throwable</code>
     * and providing a <code>message</code>.
     */
    public MojoException(String message, Throwable cause) {

            MavenExecutionRequest request, List<MavenProject> projects, Set<String> projectSelectors) {
        Set<MavenProject> resolvedOptionalProjects = new LinkedHashSet<>();
        Set<String> unresolvedOptionalSelectors = new HashSet<>();
        File baseDirectory = getBaseDirectoryFromRequest(request);
        for (String selector : projectSelectors) {
            Optional<MavenProject> optSelectedProject =

          <version>1.0.0+</version>
          <description>Name of the plugin.</description>
          <type>String</type>
        </field>
        <field>
          <name>description</name>
          <version>1.0.0+</version>
          <description>Description of the plugin.</description>
          <type>String</type>
        </field>
        <field>
          <name>groupId</name>
          <version>1.0.0+</version>

            }

            @Override
            public String getUserProperty(String key) {
                return context.userProperties.computeIfAbsent(
                        key, k -> request.getUserProperties().get(key));
            }

            @Override
            public Model getRawModel(Path from, String gId, String aId) {
                Model model = findRawModel(from, gId, aId);

            <phase>initialize</phase>
            <goals>
              <goal>reset</goal>
            </goals>
            <configuration>
              <logFile>target/exec.log</logFile>
              <string>test</string>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>

  <reporting>
    <plugins>
      <plugin>

        <groupId implementation="java.lang.String">${groupId}</groupId>
        <artifactId implementation="java.lang.String">${artifactId}</artifactId>
        <version implementation="java.lang.String">${version}</version>
        <goal implementation="java.lang.String">${goal}</goal>
      </configuration>
      <requirements>
        <requirement>

                builder.distributionManagement(dist.withSite(site.withUrl(normalize(site.getUrl()))));
            }
        }

        return builder.build();
    }

    private String normalize(String url) {
        return urlNormalizer.normalize(url);
    }

    }

    private static String getId(ClassRealmConstituent constituent) {
        return getId(
                constituent.getGroupId(),
                constituent.getArtifactId(),
                constituent.getType(),
                constituent.getClassifier(),
                constituent.getVersion());
    }

    private static String getId(String gid, String aid, String type, String cls, String ver) {