*/
    boolean isTopProject();

    /**
     * Returns a boolean indicating if the project is a root project,
     * meaning that the {@link #getRootDirectory()} and {@link #getBasedir()}
     * points to the same directory, and that either {@link Model#isRoot()}
     * is {@code true} or that {@code basedir} contains a {@code .mvn} child
     * directory.
     *
     * @return {@code true} if the project is the root project

  project
- nice little sample projects that could be run in the core as well as integration tests

All Possible Errors
- invalid lifecycle phase (maybe same as bad CLI param, though you were talking about embedder too)
- <module> specified is not found
- malformed settings
- malformed POM
- local repository not writable
- remote repositories not available

                                + "Detected that one of the modules of this multi-module project uses another module as "
                                + "plugin extension which still needed to be built. This is not possible within the same "
                                + "reactor build. Another project collection strategy will be executed as result.",
                        System.lineSeparator());
                return Collections.emptyList();
            }

  <groupId>org.apache.maven.its.mng4193</groupId>
  <artifactId>test</artifactId>
  <version>0.1</version>
  <packaging>jar</packaging>

  <name>Maven Integration Test :: MNG-4193</name>
  <description>
    Test that multiple plugin repository declarations with the same id cause a validation error even if the
    repositories are defined within a (non-active) profile.
  </description>

  <profiles>
    <profile>

oryImpl) that is selected if no other implementation class name can be discovered. Its primary purpose is to create (as necessary) and return Log instances in response to calls to the getInstance() method. The default implementation uses the following rules: At most one Log instance of the same name will be created. Subsequent getInstance() calls to the same LogFactory instance, with the same name or Class parameter, will return the same Log instance. When a new Log instance must be created, the...

    // test interpolation of basedir values in mojo configuration

    // test a build where projects use different versions of the same plugin

    @Test
    void testThatPluginDependencyThatHasSystemScopeIsResolved() throws Exception {
        MavenSession session = createMavenSession(getProject("project-contributing-system-scope-plugin-dep"));

  <modelVersion>4.0.0</modelVersion>

  <groupId>org.apache.maven.its.mng1412</groupId>
  <artifactId>test</artifactId>
  <version>0.1-SNAPSHOT</version>

  <name>Maven Integration Test :: MNG-1412</name>
  <description>
    Check that dependencies are available in classpath in same order as declared in POM.
  </description>

  <dependencies>
    <!-- model dependencies first, in the order given -->
    <dependency>

 * representation for models that physically look different but are semantically equivalent.
 *
 */
public interface ModelNormalizer {

    /**
     * Merges duplicate elements like multiple declarations of the same build plugin in the specified model.
     *
     * @param model The model whose duplicate elements should be merged, must not be {@code null}.

import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 * Verifies the version of a dependency listed in a parent's
 * dependencyManagement section is chosen over another version of the same
 * dependency, listed transitively.
 *
 */
@Deprecated
class ProjectInheritanceTest extends AbstractProjectInheritanceTestCase {
    // ----------------------------------------------------------------------
    //

      <name>Carlos Sanchez</name>
      <id>carlos</id>
      <email>******@****.***</email>
      <roles>
        <role>Developer</role>
      </roles>
    </developer>
    <developer>
      <name>Brett Porter</name>
      <id>brett</id>
      <email>******@****.***</email>
      <roles>
        <role>Developer</role>
      </roles>
    </developer>
    <developer>
      <name>John Casey</name>