step.phase != null && step.executions().findAny().isPresent())
                    .sorted(Comparator.comparingInt(plan.sortedNodes()::indexOf))
                    .forEach(step -> {
                        writer.accept("\t-----------------------------------------------------------------------");
                        writer.accept("\tPhase:         " + step.name);

                        + " 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() + ".");
            }

            if (logger.isDebugEnabled()) {

      listeners.get(i).dispatch();
    }
  }

  /**
   * A special purpose queue/executor that dispatches listener events serially on a configured
   * executor. Each event can be added and dispatched as separate phases.
   *
   * <p>This class is very similar to {@link SequentialExecutor} with the exception that events can
   * be added without necessarily executing immediately.
   */

import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.project.MavenProject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * <p>
 * Logs debug output from the various lifecycle phases.
 * </p>
 * <strong>NOTE:</strong> This class is not part of any public api and can be changed or deleted without prior notice.
 *
 * @since 3.0
 */
@Named
@Singleton
public class LifecycleDebugLogger {

For a particular application plugin there will be a declarative descriptor for that plugin type.

h3. Some general notes on Nexus

The plugin metadata:
* the plugin class
* UI to contribute
* what JS to hook into the UI
* what resources to load into the UI

     1. plugin goal execution in a child is usually simply appended (at end): you can't try to insert in the middle of pre-existing inherited executions,

     2. append happens at plugin level first, then goal level, independently from phases.
        This means for example that adding pluginA:goal2 to pre-existing (pluginA:goal1, pluginB:goal) will lead to (pluginA:goal1, pluginA:goal2, pluginB:goal)

        </field>
        <field>
          <name>phase</name>
          <version>1.0.0+</version>
          <type>String</type>
          <description>
            Defines a default phase to bind a Mojo execution to if the user does not explicitly set a phase in the POM.

        aliases.putAll(step.aliases);
    }

    private Map<String, BuildStep> merge(Map<String, BuildStep> org, Map<String, BuildStep> add) {
        // all new phases should be added after the existing ones
        List<BuildStep> lasts =
                org.values().stream().filter(b -> b.successors.isEmpty()).toList();
        List<BuildStep> firsts =

        }

        for (Phase phase : lifecycleOverlay.getPhases()) {
            String phaseId = defaultLifecycles.getLifeCycles().stream()
                    .flatMap(l -> l.getDelegate().aliases().stream())
                    .filter(a -> phase.getId().equals(a.v3Phase()))
                    .findFirst()
                    .map(a -> a.v4Phase())
                    .orElse(phase.getId());

      listeners.get(i).dispatch();
    }
  }

  /**
   * A special purpose queue/executor that dispatches listener events serially on a configured
   * executor. Each event can be added and dispatched as separate phases.
   *
   * <p>This class is very similar to {@link SequentialExecutor} with the exception that events can
   * be added without necessarily executing immediately.
   */