<expressions>
  <expression>
    <syntax>project.distributionManagementArtifactRepository</syntax>
    <configuration>
      <![CDATA[
<distributionManagement>
  <!-- use the following if you're not using a snapshot version. -->
  <repository>
    <id>repo</id>
    <name>Repository Name</name>
    <url>scp://host/path/to/repo</url>
  </repository>

 * under the License.
 */
package org.apache.maven.model.path;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import org.apache.maven.model.DistributionManagement;
import org.apache.maven.model.Model;
import org.apache.maven.model.Scm;
import org.apache.maven.model.Site;
import org.apache.maven.model.building.ModelBuildingRequest;

/**

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

        assertContains(result.getWarnings().get(2), "'distributionManagement.repository.id' must not be 'local'");
        assertContains(
                result.getWarnings().get(3), "'distributionManagement.snapshotRepository.id' must not be 'local'");
    }

    @Test
    void testMissingPluginDependencyGroupId() throws Exception {

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

import org.apache.maven.api.Language;
import org.apache.maven.model.DependencyManagement;
import org.apache.maven.model.DistributionManagement;
import org.apache.maven.model.License;
import org.apache.maven.model.Model;
import org.apache.maven.model.Prerequisites;
import org.apache.maven.model.Repository;

            }

            DistributionManagement distMgmt = m.getDistributionManagement();
            if (distMgmt != null) {
                if (distMgmt.getStatus() != null) {
                    addViolation(
                            problems,
                            Severity.ERROR,
                            Version.V20,
                            "distributionManagement.status",
                            null,

        if (model.getDistributionManagement() != null
                && model.getDistributionManagement().getRelocation() != null) {
            // keep relocation only
            builder.distributionManagement(DistributionManagement.newBuilder()
                    .relocation(model.getDistributionManagement().getRelocation())
                    .build());
        }
        // only keep repositories other than 'central'

  Notice that the 5 URLs from the model (<<<project.url>>>, <<<project.scm.connection>>>, <<<project.scm.developerConnection>>>,
  <<<project.scm.url>>> and <<<project.distributionManagement.site.url>>>) have a special inheritance handling:

  ** if not configured in current model, the inherited value is the parent's one with current artifact id appended,

import org.apache.maven.bridge.MavenRepositorySystem;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.model.Dependency;
import org.apache.maven.model.DependencyManagement;
import org.apache.maven.model.DistributionManagement;
import org.apache.maven.model.Model;
import org.apache.maven.model.Relocation;
import org.apache.maven.model.Repository;
import org.apache.maven.model.building.ModelBuildingException;

        expressions.add("project.scm.url");
        expressions.add("project.scm.connection");
        expressions.add("project.scm.developerConnection");
        expressions.add("project.distributionManagement.site.url");

        URL_EXPRESSIONS = expressions;
    }

    private UrlNormalizer normalizer;

    UrlNormalizingPostProcessor(UrlNormalizer normalizer) {
        this.normalizer = normalizer;
    }