Best practice is to use the JIRA issue title in both the pull request title and in the first line of the commit message.
 - [ ] Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
 - [ ] Run `mvn clean verify` to make sure basic checks pass. A more thorough check will
       be performed on your pull request automatically.
 - [ ] You have run the [Core IT][core-its] successfully.

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;
import org.codehaus.plexus.util.xml.pull.XmlPullParserException;

/**
 * ExpressionDocumenter
 */
@Deprecated
public class ExpressionDocumenter {

        List<String> unversionedPlugins = executionPlan.getMojoExecutions().stream()
                .map(MojoExecution::getPlugin)
                .filter(p -> p.getLocation("version") != null
                        && p.getLocation("version").getSource() != null
                        && defaulModelId.equals(
                                p.getLocation("version").getSource().getModelId()))
                .distinct()

     *
     * @param project The project to try to resolve the artifact from, must not be <code>null</code>.
     * @param requestedArtifact The artifact to resolve, must not be <code>null</code>.
     * @return The matching artifact from the project or <code>null</code> if not found. Note that this
     */
    private Artifact findMatchingArtifact(MavenProject project, Artifact requestedArtifact) {

     */
    public String getId() {
        return new StringBuilder(128)
            .append((getGroupId() == null) ? "[unknown-group-id]" : getGroupId())
            .append(":")
            .append((getArtifactId() == null) ? "[unknown-artifact-id]" : getArtifactId())
            .append(":")
            .append((getVersion() == null) ? "[unknown-version]" : getVersion())

                    e);

            return null;
        }

        return artifactFactory.createPluginArtifact(plugin.getGroupId(), plugin.getArtifactId(), versionRange);
    }

    public ArtifactRepositoryPolicy buildArtifactRepositoryPolicy(RepositoryPolicy policy) {
        boolean enabled = true;

        String updatePolicy = null;

        String checksumPolicy = null;

        if (policy != null) {

        String groupId = model.getGroupId();
        if (groupId == null && model.getParent() != null) {
            groupId = model.getParent().getGroupId();
        }
        return groupId;
    }

    private String getVersion(Model model) {
        String version = model.getVersion();
        if (version == null && model.getParent() != null) {
            version = model.getParent().getVersion();
        }

     * @param element Configuration element name to unmarshal or {@code null} to unmarshal entire configuration.
     * @return This request for chaining, never {@code null}.
     */
    BeanConfigurationRequest setConfiguration(Object configuration, String element);

    /**
     * Returns configuration element name or {@code null}.
     *
     * @see #setConfiguration(Object, String)

     * used by plugins.
     *
     * @param artifacts The set of artifacts, may be {@code null}.
     */
    public void setResolvedArtifacts(Set<Artifact> artifacts) {
        this.resolvedArtifacts = (artifacts != null) ? artifacts : Collections.<Artifact>emptySet();
        this.artifacts = null;
        this.artifactMap = null;
    }

    /**

                        p.getDefaultValue() != null
                                ? Collections.singletonMap("default-value", p.getDefaultValue())
                                : null,
                        null,
                        null))
                .collect(Collectors.toList());
        return new XmlNodeImpl("configuration", null, null, children, null);
    }