* directory pointed at by the {@code -f/--file} command line argument.
     */
    @Nonnull
    Path getTopDirectory();

    /**
     * Gets the root directory of the session, which is the root directory for the top directory project.
     *
     * @throws IllegalStateException if the root directory could not be found
     * @see #getTopDirectory()
     * @see Project#getRootDirectory()
     */
    @Nonnull

          <version>3.0.0+</version>
          <description>The default goal (or phase in Maven 2) to execute when none is specified for
            the project. Note that in case of a multi-module build, only the default goal of the top-level
            project is relevant, i.e. the default goals of child modules are ignored. Since Maven 3,
            multiple goals/phases can be separated by whitespace.</description>
          <type>String</type>

        File f = getFileForClasspathResource("canonical-pom.xml");

        MavenProject project = getProject(f);

        // ----------------------------------------------------------------------
        // Top-level elements
        // ----------------------------------------------------------------------

        assertEquals("4.0.0", project.getModelVersion());

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.

ogging.LogFactory; public class MyComponent { protected static Log log = LogFactory.getLog("my.component"); // Called once at startup time public void start() { ... log.info("MyComponent started"); ... } // Called once at shutdown time public void stop() { ... log.info("MyComponent stopped"); ... } // Called repeatedly to process a particular argument value // which you want logged if debugging is enabled public void process(String value) { ... // Do the string concatenation only if logging is enabled...

org/codehaus/plexus/personality/plexus/lifecycle/phase/Startable.class package org.codehaus.plexus.personality.plexus.lifecycle.phase; public abstract interface Startable { public abstract void start() throws StartingException; public abstract void stop() throws StoppingException; } org/codehaus/plexus/personality/plexus/lifecycle/phase/StartingException.class package org.codehaus.plexus.personality.plexus.lifecycle.phase; public synchronized class StartingException extends Exception { public void...

org/codehaus/plexus/personality/plexus/lifecycle/phase/Startable.class package org.codehaus.plexus.personality.plexus.lifecycle.phase; public abstract interface Startable { public abstract void start() throws StartingException; public abstract void stop() throws StoppingException; } org/codehaus/plexus/personality/plexus/lifecycle/phase/StartingException.class package org.codehaus.plexus.personality.plexus.lifecycle.phase; public synchronized class StartingException extends Exception { public void...

     * Returns a boolean indicating if the project is the top level project for
     * this reactor build.  The top level project may be different from the
     * {@code rootDirectory}, especially if a subtree of the project is being
     * built, either because Maven has been launched in a subdirectory or using
     * a {@code -f} option.
     *
     * @return {@code true} if the project is the top level project for this build
     */

private final transient SweeperPool pool; private transient boolean service; private final transient int sweepInterval; public void SweeperPool$Sweeper(SweeperPool, int); public void run(); public synchronized void start(); public synchronized void stop(); private final void debug(String); private void runSweep(); } org/codehaus/plexus/util/SweeperPool.class package org.codehaus.plexus.util; public synchronized class SweeperPool { private static final boolean DEBUG = 0; private transient SweeperPool$Sweeper...

+-----+
${maven.home}
     |
     +--- maven.properties
+-----+

* Group configuration

 As far as properties go for an entire build the maven.properties could be placed at
 the top of the group but I'm not really sure how this might work. There could probably
 also be a directory for plugins.xml and maven.properties.

* Project configuration