InputLocation location = DefaultLifecycleRegistry.DEFAULT_LIFECYCLE_INPUT_LOCATION;

        List<LifecycleMojo> mojos = goals.getMojos();
        if (mojos != null) {
            for (int i = 0; i < mojos.size(); i++) {
                LifecycleMojo mojo = mojos.get(i);

                // Compute goal coordinates
                String groupId, artifactId, version, goal;

        // which uses role:roleHint for identity...and roleHint == goalPrefix:goal.
        // role does not vary for Mojos.
        List<MojoDescriptor> mojos = getMojos();

        if (mojos != null && mojos.contains(mojoDescriptor)) {
            int indexOf = mojos.indexOf(mojoDescriptor);

            existing = mojos.get(indexOf);
        }

        if (existing != null) {

        InputLocation location = new InputLocation(-1, -1, inputSource);
        location.setLocation(0, location);

        List<LifecycleMojo> mojos = goals.getMojos();
        if (mojos != null) {

            for (int i = 0; i < mojos.size(); i++) {
                LifecycleMojo mojo = mojos.get(i);

                GoalSpec gs = parseGoalSpec(mojo.getGoal());

                if (gs == null) {
                    logger.warn(

        } else {
            return false;
        }
    }

    public void skip() {
        skip.set(true);
        mojos.clear();
    }

    public void addMojo(MojoExecution mojo, int priority) {
        if (!skip.get()) {
            mojos.computeIfAbsent(priority, k -> new LinkedHashMap<>())
                    .put(mojo.getGoal() + ":" + mojo.getExecutionId(), mojo);
        }
    }

* Implications for Mojo Execution

** Deployment mojos

  The concept of deployment is dependent on the availability of a some
  remote repository. Just as above, if that repository is not using
  file:// (which is highly likely to be the case), or the repository is
  not on a local filesystem, deployment will fail when offline.

** Testing mojos

  This can be a problem if the tests are more than simple unit tests;

            @since Maven 4.0.0-alpha-3
          </description>
          <type>String</type>
        </field>
        <field xdoc.separator="blank">
          <name>mojos</name>
          <version>1.0.0+</version>
          <association>
            <type>MojoDescriptor</type>
            <multiplicity>*</multiplicity>
          </association>

            }
        }
        return plugins;
    }

    /**
     * Get set of mojos used but not marked @threadSafe
     *
     * @return the set of mojo descriptors
     */
    public Set<MojoDescriptor> getNonThreadSafeMojos() {
        Set<MojoDescriptor> mojos = new HashSet<>();
        for (ExecutionPlanItem executionPlanItem : planItem) {

                MojoDescriptor ownerMojo = owner != null ? mojos.get(owner) : null;
                String str = ownerMojo != null ? " The " + ownerMojo.getId() : "An";
                String msg = str + " aggregator mojo is already being executed "
                        + "in this parallel build, those kind of mojos require exclusive access to "

~~ under the License.

 -----
 Introduction
 -----
 Hervé Boutemy
 -----
 2012-06-02
 -----

Maven 3 Plugin API

 The API for Maven 3 plugins - composed of goals implemented by Mojos - development:

 * goal code extends {{{./apidocs/org/apache/maven/plugin/AbstractMojo.html}<<<AbstractMojo>>> base class}} that implements {{{./apidocs/org/apache/maven/plugin/Mojo.html}<<<Mojo>>> interface}},

            throws PlexusConfigurationException {
        List<MojoDescriptor> mojos = new ArrayList<>();

        PlexusConfiguration[] mojoConfigurations = c.getChild("mojos").getChildren("mojo");

        for (PlexusConfiguration component : mojoConfigurations) {
            mojos.add(buildComponentDescriptor(component, pluginDescriptor));
        }
        return mojos;
    }