title.appendChild(document.createTextNode(" plugin"));

        Element titleabbrev = document.createElement("titleabbrev");
        section.appendChild(titleabbrev);
        literal = document.createElement("literal");
        titleabbrev.appendChild(literal);
        literal.appendChild(document.createTextNode(extension.getPluginId()));
        titleabbrev.appendChild(document.createTextNode(" plugin"));

  <groupId>com.example.group</groupId>
  <artifactId>testinvalidpom</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId></groupId>
          <artifactId/>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>

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

import org.apache.maven.execution.MavenSession;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
import org.codehaus.plexus.configuration.PlexusConfiguration;

/**
 * Service responsible for validating plugin configuration.
 *
 */

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

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.maven.usability.plugin.io.xpp3.ParamdocXpp3Reader;

     */
    public void flushPluginMap() {
    }

    /**
     * @return a Map of plugins field with {@code Plugins#getKey()} as key
     * @see Plugin#getKey()
     */
    public Map<String, Plugin> getPluginsAsMap() {
        return getPlugins().stream().collect(Collectors.toMap(plugin -> plugin.getKey(), plugin -> plugin));
    }
            ]]>
          </code>
        </codeSegment>
        <codeSegment>

        if (getBuildPlugins() != null) {
            for (Plugin plugin : getBuildPlugins()) {
                if (pluginGroupId.equals(plugin.getGroupId()) && pluginArtifactId.equals(plugin.getArtifactId())) {
                    dom = (Xpp3Dom) plugin.getConfiguration();

                    if (executionId != null) {
                        for (PluginExecution execution : plugin.getExecutions()) {

 * under the License.
 */

/**
 * Contains classes for managing plugin-specific lifecycle bindings and forked executions.
 * This package helps define how plugins can modify or extend Maven's build lifecycle.
 *
 * @since 4.0.0
 */

    @Test
    void testThreadSafeMojos() throws Exception {
        MavenExecutionPlan plan = LifecycleExecutionPlanCalculatorStub.getProjectAExecutionPlan();
        final Set<Plugin> unSafePlugins = plan.getNonThreadSafePlugins();
        // There is only a single threadsafe plugin here...
        assertEquals(plan.size() - 1, unSafePlugins.size());
    }

    @Test
    void testFindLastWhenFirst() throws Exception {

                throw new NoGoalSpecifiedException("No goals have been specified for this build."
                        + " You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or"
                        + " <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>."
                        + " Available lifecycle phases are: " + defaultLifeCycles.getLifecyclePhaseList() + ".");
            }

        } catch (CloneNotSupportedException e) {
            throw new UnsupportedOperationException(e);
        }
    }

    public org.apache.maven.api.plugin.descriptor.Parameter getParameterV4() {
        return org.apache.maven.api.plugin.descriptor.Parameter.newBuilder()
                .alias(alias)
                .name(name)
                .type(type)
                .required(required)