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;

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) {

// 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 {

            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;
        }

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

    String SELF_COMBINATION_MERGE = "merge";

    String SELF_COMBINATION_REMOVE = "remove";

    /**
     * In case of complex XML structures, combining can be done based on id.
     */
    String ID_COMBINATION_MODE_ATTRIBUTE = "combine.id";

    /**
     * In case of complex XML structures, combining can be done based on keys.
     * This is a comma separated list of attribute names.
     */

        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();

    protected String type;
    protected ArtifactScopeEnum artifactScope;
    protected String classifier;

    /**
     * explanation: why this MD was chosen over its siblings
     * in the resulting structure (classpath for now)
     */
    protected String why;

    /** dependencies of the artifact behind this metadata */
    protected Collection<ArtifactMetadata> dependencies;

    /** metadata URI */