protected String formatParameter(Parameter parameter) {
        StringBuilder stringBuilder = new StringBuilder()
                .append("Parameter '")
                .append(parameter.getName())
                .append('\'');

        if (parameter.getExpression() != null) {
            String userProperty = parameter.getExpression().replace("${", "'").replace('}', '\'');

     * @deprecated Use {@link #DebugConfigurationListener(Logger)} instead.
     */
    @Deprecated
    public DebugConfigurationListener(org.codehaus.plexus.logging.Logger logger) {
        this(LoggerFactory.getLogger(logger.getName()));
    }

    public DebugConfigurationListener(Logger logger) {
        this.logger = logger;
    }

    public void notifyFieldChangeUsingSetter(String fieldName, Object value, Object target) {

            Parameter parameter,
            PlexusConfiguration pomConfiguration,
            ExpressionEvaluator expressionEvaluator) {
        PlexusConfiguration config = pomConfiguration.getChild(parameter.getName(), false);

        if (isValueSet(config, expressionEvaluator)) {
            pluginValidationManager.reportPluginMojoValidationIssue(
                    PluginValidationManager.IssueLocality.INTERNAL,

        return (Path) Proxy.newProxyInstance(
                ExclusionArtifactFilter.class.getClassLoader(), new Class[] {Path.class}, (proxy1, method, args) -> {
                    if ("toString".equals(method.getName())) {
                        return value;
                    }
                    throw new UnsupportedOperationException();
                });
    }

            }
        }
    }

    private void logError(String action, Throwable e, EventSpy spy) {
        String msg = "Failed to " + action + " spy " + spy.getClass().getName() + ": " + e.getMessage();

        if (logger.isDebugEnabled()) {
            logger.warn(msg, e);
        } else {
            logger.warn(msg);
        }
    }

import java.util.List;

/**
 * Convenience interface for plugins to add or replace artifacts and resources on projects.
 */
public interface MavenProjectHelper {
    String ROLE = MavenProjectHelper.class.getName();

    /**
     * See {@link #attachArtifact(MavenProject, String, String, java.io.File)}, but with type set to null.
     * @param project project reference.
     * @param artifactFile artifact file.

    }

    private ArtifactTransferEvent wrap(TransferEvent event) {
        if (event == null) {
            return null;
        } else {
            String wagon = event.getWagon().getClass().getName();

            ArtifactTransferResource artifact = wrap(event.getWagon().getRepository(), event.getResource());

            ArtifactTransferEvent evt;
            if (event.getException() != null) {

 * A facade that provides lifecycle services to components outside Maven core.
 *
 */
public interface LifecycleExecutor {

    // USED BY MAVEN HELP PLUGIN
    @Deprecated
    String ROLE = LifecycleExecutor.class.getName();

    // For a given project packaging find all the plugins that are bound to any registered
    // lifecycles. The project builder needs to now what default plugin information needs to be

    }

    /**
     * Wraps an object, providing reflective access to the object graph of which the
     * supplied object is the root. Expressions like 'child.name' will translate into
     * 'rootObject.getChild().getName()' for non-boolean properties, and
     * 'rootObject.getChild().isName()' for boolean properties.
     */
    public static class ObjectBasedValueSource extends AbstractValueSource {

        private final Object root;

     * that value or attribute will be set from the recessive DOM node.
     */
    String DEFAULT_SELF_COMBINATION_MODE = SELF_COMBINATION_MERGE;

    @Nonnull
    String getName();

    @Nonnull
    String getNamespaceUri();

    @Nonnull
    String getPrefix();

    @Nullable
    String getValue();

    @Nonnull
    Map<String, String> getAttributes();