The most important stubs are:
LifecycleExecutionPlanCalculatorStub
ProjectDependencyGraphStub

Since they define the primary structure of the project/build.

The stubs define three top-level targets that are defined in  LifecycleTaskSegmentCalculatorStub;
clean, aggr and install. "aggr" is an aggregating task while clean and install are lifecyclephases.
There will be three items in the task list for this dataset.

            mergePlugin_Version(builder, target, source, sourceDominant, context);
            mergePlugin_Extensions(builder, target, source, sourceDominant, context);
            mergePlugin_Executions(builder, target, source, sourceDominant, context);
            mergePlugin_Dependencies(builder, target, source, sourceDominant, context);
            return builder.build();
        }

    }

    /**
     * PUTs the source file (must exist as file) to target URI. The target MUST BE relative from the
     * {@link RemoteRepository#getUrl()} root.
     *
     * @throws RuntimeException If PUT fails for any reason.
     */
    void put(@Nonnull Path source, @Nonnull URI relativeTarget);

    /**
     * PUTs the source byte array to target URI. The target MUST BE relative from the
     * {@link RemoteRepository#getUrl()} root.

        this.transporter = requireNonNull(transporter);
    }

    @Override
    public boolean get(URI relativeSource, Path target) {
        requireNonNull(relativeSource, "relativeSource is null");
        requireNonNull(target, "target is null");
        if (relativeSource.isAbsolute()) {
            throw new IllegalArgumentException("Supplied URI is not relative");
        }

    protected static class LifecycleBindingsMerger extends MavenModelMerger {

        private static final String PLUGIN_MANAGEMENT = "plugin-management";

        public Model merge(Model target, Model source) {
            Build targetBuild = target.getBuild();
            if (targetBuild == null) {
                targetBuild = Build.newInstance();
            }

            Map<Object, Object> context =

                Dependency target,
                Dependency source,
                boolean sourceDominant,
                Map<Object, Object> context) {
            // optional flag is not managed
        }

        @Override
        protected void mergeDependency_Exclusions(
                Dependency.Builder builder,
                Dependency target,
                Dependency source,

      </includes>
    </fileSet>
    <fileSet>
      <directory>target/maven-shared-archive-resources/META-INF</directory>
      <outputDirectory>./</outputDirectory>
      <includes>
        <include>LICENSE</include>
        <include>NOTICE</include>
      </includes>
    </fileSet>
    <fileSet>
      <directory>target/licenses/lib</directory>
      <outputDirectory>lib</outputDirectory>
      <includes>

 */
package org.apache.maven.api.di;

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

@Target({FIELD, CONSTRUCTOR, METHOD})
@Retention(RUNTIME)
@Documented

 */
package org.apache.maven.api.di;

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

@Target(ANNOTATION_TYPE)
@Retention(RUNTIME)
@Documented

import java.lang.annotation.Target;

import com.google.inject.ScopeAnnotation;

import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Indicates that annotated component should be instantiated before session execution starts
 * and discarded after session execution completes.
 *
 * @since 3.2.0
 */
@Target({TYPE})
@Retention(RUNTIME)