if (lifecyclePhases.isEmpty()) {
            return Collections.emptyMap();
        }

        Map<String, String> phases = new LinkedHashMap<>();
        for (Map.Entry<String, LifecyclePhase> e : lifecyclePhases.entrySet()) {
            phases.put(e.getKey(), e.getValue().toString());
        }
        return phases;
    }

  |   improving on that
  |
  | o use enums where appropriate (eg dependency scope)
  |
  | o a number of elements have a groupId/artifactId and sometimes version. It would be good to have them all extend one
  |   definition of these types
  |
-->
<model xmlns="http://codehaus-plexus.github.io/MODELLO/2.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

                    MojoNotFoundException, InvalidPluginDescriptorException {
        /*
         * Initialize mapping from lifecycle phase to bound mojos. The key set of this map denotes the phases the caller
         * is interested in, i.e. all phases up to and including the specified phase.
         */

        Map<String, Map<Integer, List<MojoExecution>>> mappings = new LinkedHashMap<>();

@Singleton
public final class SiteLifecycleProvider extends AbstractLifecycleProvider {
    static final String LIFECYCLE_ID = "site";

    // START SNIPPET: site
    private static final String[] PHASES = {"pre-site", "site", "post-site", "site-deploy"};

    private static final String MAVEN_SITE_PLUGIN_VERSION = "3.12.1";

    private static final String[] BINDINGS = {

 */
package org.apache.maven.api;

import java.util.Optional;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;

/**
 * Event sent by maven during various phases of the build process.
 * Such events can be listened to using {@link Listener}s objects
 * registered in the {@link Session}.
 *
 * @since 4.0.0
 */
@Experimental
public interface Event {

    /**

        this.id = lifecycle.id();
        this.phases = registry.computePhases(lifecycle);
        this.defaultPhases = getDefaultPhases(lifecycle);
    }

    // <lifecycle>
    //   <id>clean</id>
    //   <phases>
    //     <phase>pre-clean</phase>
    //     <phase>clean</phase>
    //     <phase>post-clean</phase>
    //   </phases>
    //   <default-phases>

        private final String name;
        private final List<Plugin> plugins;
        private final List<Lifecycle.Phase> phases;

        DefaultPhase(String name, List<Plugin> plugins, List<Lifecycle.Phase> phases) {
            this.name = name;
            this.plugins = plugins;
            this.phases = phases;
        }

        @Override
        public String name() {
            return name;
        }

entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not limited...

import java.util.Arrays;
import java.util.List;

import org.apache.maven.plugin.PluginValidationManager;

/**
 * Common implementations for plugin parameters configuration validation that relies on Mojo descriptor (leaves out
 * core parameters by default).
 *
 */
abstract class AbstractMavenPluginDescriptorSourcedParametersValidator extends AbstractMavenPluginParametersValidator {

                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() + ".");
            }