<dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.13.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>org.codehaus.plexus</groupId>
        <artifactId>plexus-container-default</artifactId>
        <version>1.0-alpha-8</version>
      </dependency>

import org.apache.maven.model.Activation;
import org.apache.maven.model.Build;
import org.apache.maven.model.BuildBase;
import org.apache.maven.model.Dependency;
import org.apache.maven.model.DependencyManagement;
import org.apache.maven.model.DistributionManagement;
import org.apache.maven.model.Exclusion;
import org.apache.maven.model.InputLocation;
import org.apache.maven.model.InputLocationTracker;

      <!--
      We moved away from using dependencyManagement for test-only deps because of https://github.com/google/guava/issues/6654.
      We could probably have resumed it after https://github.com/google/guava/pull/6664.
      But it's always weird that published poms reference test-only libraries at all, so I'm not in any rush to do so.
      -->
    </dependencies>
  </dependencyManagement>
  <build>

      <!--
      We moved away from using dependencyManagement for test-only deps because of https://github.com/google/guava/issues/6654.
      We could probably have resumed it after https://github.com/google/guava/pull/6664.
      But it's always weird that published poms reference test-only libraries at all, so I'm not in any rush to do so.
      -->
    </dependencies>
  </dependencyManagement>
  <build>

import static org.junit.jupiter.api.Assertions.assertNotNull;
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
@SuppressWarnings("checkstyle:UnusedLocalVariable")

        // For some reason with the introduction of MNG-1577 we have the case in Yoko where a depMan section has
        // something like the following:
        //
        // <dependencyManagement>
        //     <dependencies>
        //         <!--  Yoko modules -->
        //         <dependency>
        //             <groupId>org.apache.yoko</groupId>

                })
                .count();
        fixed |= fixedCombineSelfCount > 0;

        return fixed;
    }

    /**
     * Fixes duplicate dependencies in dependencies and dependencyManagement sections.
     */
    private boolean fixDuplicateDependencies(Document pomDocument, UpgradeContext context) {
        Element root = pomDocument.root();

        // Collect all dependency containers to process

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>${junitVersion}</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <dependencyManagement>
    <!--end-->
    <dependencies>
      <!--  Maven Modules -->
      <!--start-->
      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-mercury</artifactId>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>${junitVersion}</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <dependencyManagement>
    <!--end-->
    <dependencies>
      <!--  Maven Modules -->
      <!--start-->
      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-mercury</artifactId>

            ModelBase target, ModelBase source, boolean sourceDominant, Map<Object, Object> context) {
        DependencyManagement src = source.getDependencyManagement();
        if (src != null) {
            DependencyManagement tgt = target.getDependencyManagement();
            if (tgt == null) {
                tgt = new DependencyManagement();
                target.setDependencyManagement(tgt);
            }