* property which happens very early.  The implementation used in this case
 * will be discovered using the JDK service mechanism.
 *
 * The default implementation will look for a {@code .mvn} child directory
 * or a {@code pom.xml} containing the {@code root="true"} attribute.
 */
public interface RootLocator {

    String UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE = "Unable to find the root directory. "

            <stringParam>CHILD-1</stringParam>
            <stringParam>CHILD-3</stringParam>
            <stringParam>CHILD-2</stringParam>
            <stringParam>CHILD-4</stringParam>
          </stringParams>
          <listParam combine.children="append">
            <!-- NOTE: These values are deliberately not in alpha order! -->
            <listParam>CHILD-1</listParam>
            <listParam>CHILD-3</listParam>

        <executions>
          <execution>
            <id>child-1</id>
            <phase>validate</phase>
            <goals>
              <goal>child-1</goal>
            </goals>
          </execution>
          <execution>
            <id>child-2</id>
            <phase>validate</phase>
            <goals>
              <goal>child-2</goal>
            </goals>
          </execution>
          <execution>

    <artifactId>parent</artifactId>
    <version>0.1</version>
  </parent>

  <artifactId>child-1</artifactId>

  <name>Maven Integration Test :: MNG-4129 :: Child-1</name>
  <description>
    Verify that plugin executions defined in the parent with inherited=false are not executed in child modules.
  </description>

  <build>
    <plugins>

            children = new ArrayList<>();

            for (ProjectBuildingResult result : results) {
                ExceptionSummary child = handle(result);
                if (child != null) {
                    children.add(child);
                }
            }

            message = "The build could not read " + children.size() + " project" + (children.size() == 1 ? "" : "s");
        } else {

    List<Dependency> getUnresolvedDependencies();

    /**
     * Gets the errors that occurred while building the dependency graph.
     *
     * @return The errors that occurred while building the dependency graph, never {@code null}.
     */
    List<Exception> getCollectionErrors();

    /**
     * Gets the errors that occurred while resolving the specified dependency.
     *

  <parent>
    <groupId>org.apache.maven.its.mng3846</groupId>
    <artifactId>parent</artifactId>
    <version>0.1</version>
  </parent>

  <artifactId>child</artifactId>
  <name>Child Project</name>

        org.apache.maven.project.ProjectBuilder projectBuilder =
                getContainer().lookup(org.apache.maven.project.ProjectBuilder.class);
        File child = new File(tempDir.toFile(), "child/pom.xml");
        // build project once
        projectBuilder.build(child, configuration);
        // modify parent
        File parent = new File(tempDir.toFile(), "pom.xml");

    <artifactId>parent</artifactId>
    <version>0.1</version>
  </parent>

  <artifactId>child</artifactId>

  <name>Maven Integration Test :: MNG-3979</name>
  <description>
    Test that during inheritance the merging/joining of subtrees with equal identifier doesn't crash if the parent
    POM has a non-empty element and the child POM has an empty element to join.
  </description>

  <properties/>

  <repositories>

        String childPath = child.getProperties().getOrDefault(CHILD_DIRECTORY_PROPERTY, child.getArtifactId());
        hints.put(CHILD_DIRECTORY, childPath);
        hints.put(MavenModelMerger.CHILD_PATH_ADJUSTMENT, getChildPathAdjustment(child, parent, childPath));
        return merger.merge(child, parent, false, hints);
    }

    /**