import java.util.ArrayList;
import java.util.Collection;

/**
 * This is the main graph data structure used by the RepositorySystem to present tree and graph objects.
 *
 *
 */
@Deprecated
public class MetadataGraph {
    /** all graph nodes */
    Collection<MetadataGraphNode> nodes;

    /** entry point for tree-like structures */
    MetadataGraphNode entry;

    public MetadataGraph(MetadataGraphNode entry) {

          <type>DOM</type> <!-- DOM for Maven 2.0.9/2.3.3 -->
          <description>
            Toolchain identification information, which will be matched against project requirements.
            &lt;p>Actual content structure is completely open: each toolchain type will define its own format and
            semantics.
            &lt;p>This is generally a properties format: {@code &lt;name&gt;value&lt;/name&gt;} with predefined

 <parent>
   <groupId></groupId>
   <artifactId></artifactId>
   <version></version>
 </parent>
</project>
+-----+

Extending the POM in the future

  In order to anticipate changes in the structure of the POM as new releases of
  maven occur, the maven inheritance model must be pinned against a particular
  modelVersion. This is required so that a change from modelVersion 4.0.0 to

      pre-calculated execution plan that stays the same during the execution.

      If deciding to add mutable state to this class, it should be at least considered to
      separate this into a separate mutable structure.

    */

    private final List<ExecutionPlanItem> planItem;

    private final Map<String, ExecutionPlanItem> lastMojoExecutionForAllPhases;

    final List<String> phasesInExecutionPlan;

       <name>theme</name>
       <value>classic</value>
     </parameter>
   </parameters>
  </plugin>
</plugins>
+-----+

Unified source directory

 Unified source directory structure that is analogous to the repository
 itself. This way locations of intermediary artifacts of a build would be
 in a known location. This would also help with developer setup i.e. getting

// I want to set up a local/remote repositories for testing but I don't want to have
// to change them when I change the layout of the repositories. So I want to generate
// the structure I want to test by using the artifact handler manager which dictates
// the layout used for a particular artifact type.

/**
 */
@Deprecated
class ArtifactResolverTest extends AbstractArtifactComponentTestCase {

        assertEquals(depender1, sortedProjects.get(1));
    }

    @Test
    void testVerifyExpectedParentStructure() throws CycleDetectedException, DuplicateProjectException {
        // This test verifies the baseline structure used in subsequent tests. If this fails, the rest will fail.
        ProjectDependencyGraph graph = threeProjectsDependingOnASingle();
        final List<MavenProject> sortedProjects = graph.getSortedProjects();

import static org.mockito.ArgumentMatchers.anyList;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

class DefaultGraphBuilderTest {
    /*
    The multi-module structure in this project is displayed as follows:

    module-parent
    └─── module-independent     (without parent declaration)
         module-a
         module-b               (depends on module-a)
         module-c

            buffer.append(" instead of ").append(parent.getGroupId()).append(':');
            buffer.append(parent.getArtifactId()).append(", please verify your project structure");

            problems.setSource(childModel);
            problems.add(Severity.WARNING, ModelProblem.Version.BASE, buffer.toString(), parent.getLocation(""));
            return null;
        }

      </fields>
      <comment>We could probably have a specific element for a dev mailing list for things like CI,
        and maybe even a specific element for the user and scm mailing lists. Then leave the more
        lose structure for any other type of mailing list.</comment>
      <codeSegments>
        <codeSegment>
          <version>4.0.0+</version>
          <code>
            <![CDATA[
    /**