import org.apache.maven.plugin.PluginResolutionException;
import org.apache.maven.plugin.PluginValidationManager;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.Parameter;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.apache.maven.plugin.descriptor.PluginDescriptorBuilder;
import org.apache.maven.plugin.version.DefaultPluginVersionRequest;

  <id>core-extensions</id>
  <name>CoreExtensions</name>
  <description><![CDATA[
  <p>This is a reference for the Core Extensions descriptor.</p>
  <p>The default location for the Core Extensions descriptor file is <code>${maven.projectBasedir}/.mvn/extensions.xml</code></p>
  ]]></description>

  <defaults>
    <default>
      <key>package</key>

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

import org.apache.maven.plugin.MavenPluginPrerequisitesChecker;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.eclipse.aether.version.InvalidVersionSpecificationException;
import org.eclipse.aether.version.Version;
import org.eclipse.aether.version.VersionConstraint;

 * under the License.
 */
package org.apache.maven.plugin.internal;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.Parameter;
import org.codehaus.plexus.component.configurator.ConfigurationListener;

/**

 * such as those associated with files and directories. The Windows OS
 * determines which users have the necessary permissions to access objects
 * based on these entries.
 * <p>
 * To fully understand the information exposed by this class a description
 * of the access check algorithm used by Windows is required. The following
 * is a basic description of the algorithm. For a more complete description

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.plugin.descriptor;

/**
 * DuplicateMojoDescriptorException
 */
public class DuplicateMojoDescriptorException extends InvalidPluginDescriptorException {

    public DuplicateMojoDescriptorException(

import org.apache.maven.api.Node;
import org.apache.maven.api.Plugin;
import org.apache.maven.api.model.PluginExecution;
import org.apache.maven.api.plugin.descriptor.MojoDescriptor;
import org.apache.maven.api.plugin.descriptor.PluginDescriptor;
import org.apache.maven.api.plugin.descriptor.lifecycle.Lifecycle;
import org.apache.maven.api.xml.XmlNode;
import org.apache.maven.impl.DefaultNode;
import org.codehaus.plexus.util.xml.Xpp3Dom;

 * under the License.
 */
package org.apache.maven.plugin;

import java.util.Collections;

import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.Parameter;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;

/**
 * MNG-3131
 *
 *
 */

 * such as those associated with files and directories. The Windows OS
 * determines which users have the necessary permissions to access objects
 * based on these entries.
 * <p>
 * To fully understand the information exposed by this class a description
 * of the access check algorithm used by Windows is required. The following
 * is a basic description of the algorithm. For a more complete description

        final PluginDescriptor descriptor = new PluginDescriptor();
        Plugin plugin = new Plugin();
        plugin.setGroupId("org.apache.maven.test.MavenExecutionPlan");
        plugin.setArtifactId("stub-plugin-" + phaseName);
        descriptor.setPlugin(plugin);
        descriptor.setArtifactId("artifact." + phaseName);
        mojoDescriptor.setPluginDescriptor(descriptor);
        mojoDescriptor.setThreadSafe(threadSafe);