Map<String, LifecyclePhase> phases = getLifecyclePhases(lifecycleId);
                    if (phases != null) {
                        Lifecycle lifecycle = new Lifecycle();

                        lifecycle.setId(lifecycleId);
                        lifecycle.setLifecyclePhases(phases);

                        lifecycleMap.put(lifecycleId, lifecycle);
                    }

                new SiteLifecycle(),
                new WrapperLifecycle());
        // validate lifecycle
        for (Lifecycle lifecycle : this) {
            Set<String> set = new HashSet<>();
            lifecycle.phases().forEach(phase -> {
                if (!set.add(phase.name())) {
                    throw new IllegalArgumentException(

These particular phases in a plugin’s lifecycle can probably be generalized to all plugins so could be something implemented in all plugins. Here we could have the descriptor either point to methods for each of these phases to execute or we could create a lifecycle in Plexus for these phases.

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

                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() + ".");
            }

          <version>1.0.0</version>
          <type>String</type>
          <description>The ID of this lifecycle, for identification in the mojo descriptor.</description>
        </field>
        <field>
          <name>phases</name>
          <version>1.0.0</version>
          <description>The phase mappings for this lifecycle.</description>
          <association>
            <type>Phase</type>
            <multiplicity>*</multiplicity>

                    .forEach(lf -> plugins.put(
                            lf.id(),
                            PluginContainer.newBuilder()
                                    .plugins(lf.phases().stream()
                                            .flatMap(phase -> phase.plugins().stream())
                                            .toList())
                                    .build()));

    }

    // -----------------------------------------------------------------------------------------------
    // Tests which exercise the lifecycle executor when it is dealing with default lifecycle phases.
    // -----------------------------------------------------------------------------------------------

    @Test
    void testCalculationOfBuildPlanWithIndividualTaskWherePluginIsSpecifiedInThePom() throws Exception {

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...

             * MNG-2277, the check below compensates for our bad plugin support where we ended up with aggregator
             * plugins that require dependency resolution although they usually run in phases of the build where project
             * artifacts haven't been assembled yet. The prime example of this is "mvn release:prepare".
             */

    protected AbstractLifecycleProvider(String id, String[] phases, String[] pluginBindings) {
        HashMap<String, LifecyclePhase> defaultBindings = null;
        if (pluginBindings != null) {
            final int len = pluginBindings.length;

            if (len < 2 || len % 2 != 0) {
                throw new IllegalArgumentException("Plugin bindings must have more than 0, even count of elements");
            }