import org.apache.maven.execution.ProjectDependencyGraph;
import org.apache.maven.model.building.Result;

/**
 * Builds the {@link ProjectDependencyGraph inter-dependencies graph} between projects in the reactor.
 *
 * @since 3.0-alpha
 */
public interface GraphBuilder {
    String HINT = "graphBuilder";

    Result<? extends ProjectDependencyGraph> build(MavenSession session);

              <bomDescription>Bill Of Materials for Apache Maven - Maven JARS only</bomDescription>
              <outputFilename>maven-skinny-bom.xml</outputFilename>
              <reactorDependencies>REACTOR</reactorDependencies>
              <transitiveDependencies>NONE</transitiveDependencies>
              <usePropertiesForVersion>true</usePropertiesForVersion>
              <attach>true</attach>
            </configuration>

        projects = new ProjectSorter(projects).getSortedProjects();

        assertEquals(parentProject, projects.get(0));

        // the order of these two is non-deterministic, based on when they're added to the reactor.
        assertTrue(projects.contains(pluginProject), "Expected " + projects + " to contain " + pluginProject);
        assertTrue(
                projects.contains(pluginLevelDepProject),

                                + "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();
            }

            throw e;
        }

import org.apache.maven.lifecycle.internal.builder.BuilderCommon;
import org.apache.maven.project.MavenProject;

/**
 * Contains status information that is global to an entire reactor build.
 *
 * @since 3.0
 */
public class ReactorBuildStatus {
    private final ProjectDependencyGraph projectDependencyGraph;

    <artifactId>parent</artifactId>
    <version>1</version>
  </parent>

  <artifactId>consumer</artifactId>

  <name>Maven Integration Test :: MNG-3023 :: Consumer</name>
  <description>Test that reactor projects are included in dependency resolution.</description>

  <dependencies>
    <dependency>
      <groupId>org.apache.maven.its.mng3023</groupId>
      <artifactId>dependency</artifactId>
      <version>1</version>

    // Reactor Failure Mode
    // ----------------------------------------------------------------------

    String REACTOR_FAIL_FAST = "FAIL_FAST";

    String REACTOR_FAIL_AT_END = "FAIL_AT_END";

    String REACTOR_FAIL_NEVER = "FAIL_NEVER";

    // ----------------------------------------------------------------------
    // Reactor Make Mode

    <artifactId>parent</artifactId>
    <version>1</version>
  </parent>

  <artifactId>dependency</artifactId>

  <name>Maven Integration Test :: MNG-3023 :: Dependency</name>
  <description>Test that reactor projects are included in dependency resolution.</description>

  <build>
    <outputDirectory>dependency-classes</outputDirectory>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.its.plugins</groupId>

 */
package org.apache.maven;

import java.io.File;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

/**
 * Signals a collision of two or more projects with the same g:a:v during a reactor build.
 *
 */
public class DuplicateProjectException extends MavenExecutionException {

    private Map<String, List<File>> collisions;

    /**
     * Creates a new exception with specified details.
     *

    }

    List<Project> getProjects(List<org.apache.maven.project.MavenProject> projects);

    /**
     * May return null if the input project is null or is not part of the reactor.
     */
    @Nullable
    Project getProject(org.apache.maven.project.MavenProject project);

    List<org.apache.maven.artifact.repository.ArtifactRepository> toArtifactRepositories(