@Override
    public WorkspaceRepository getRepository() {
        return this.repository;
    }

    @Override
    public Model findModel(Artifact artifact) {
        requireNonNull(artifact, "artifact cannot be null");
        Model model = null;

        for (WorkspaceReader workspaceReader : readers) {
            if (workspaceReader instanceof MavenWorkspaceReader) {

    /**
     * @param session the repository session
     * @param artifact the {@link Artifact} to install
     * @throws ArtifactInstallerException In case of an error which can be the a given artifact cannot be found or the
     *             installation has failed.
     * @throws IllegalArgumentException in case of parameter {@code session} is {@code null} or
     *          {@code artifact} is {@code null}.
     */

     * @param options possible parsing options, may be {@code null}
     * @return the parsed {@link Model}, never {@code null}
     * @throws ModelParserException if the model cannot be parsed
     */
    @Nonnull
    Model parse(@Nonnull Source source, @Nullable Map<String, ?> options) throws ModelParserException;

    /**
     * Locate and parse the model in the specified directory.

  echo The JAVA_HOME environment variable is not defined correctly, so Apache Maven cannot be started. >&2
  echo JAVA_HOME is set to "%JAVA_HOME%", but "%%JAVA_HOME%%\bin\java.exe" does not exist. >&2
  goto error
)

:checkJavaCmd
if not exist "%JAVACMD%" (
  echo The java.exe command does not exist in PATH nor is JAVA_HOME set, so Apache Maven cannot be started. >&2
  goto error

 *
 * This leads to a second side effect in that any @Inject request for just ModelProcessor in
 * the same injector is immediately matched to this explicit binding, which means extensions
 * cannot override this binding. This is because the lookup is always short-circuited in this
 * specific situation (plain @Inject request, and plain explicit binding for the same type.)
 *

     * In a package hierarchy, the {@linkplain #descriptors} map has either zero or one entry.
     * In a module hierarchy, the descriptors map may have an arbitrary number of entries,
     * including one (so the map size cannot be used as a criterion).
     *
     * @see #isModuleHierarchy()
     */
    private final boolean isModuleHierarchy;

    /**
     * Constructs an empty instance for non-modular dependencies.
     *

    private File moduleFile;
    private final String moduleName;

    public MissingModuleException(String moduleName, File moduleFile, File pomFile) {
        super("The module: " + moduleName + " cannot be found in file: " + moduleFile, pomFile);
        this.moduleName = moduleName;
        this.moduleFile = moduleFile;
    }

    public File getModuleFile() {
        return moduleFile;
    }

 *
 * @since 4.0.0
 */
@Experimental
abstract class BaseRequest {

    private final Session session;

    protected BaseRequest(@Nonnull Session session) {
        this.session = nonNull(session, "session cannot be null");
    }

    @Nonnull
    public Session getSession() {
        return session;
    }

    public static <T> T nonNull(T obj, String message) {
        if (obj == null) {

     * @param userToolchainsSource The {@link Source} pointing to the user toolchains, must not be {@code null}
     * @throws ToolchainsBuilderException if the project cannot be created
     * @throws IllegalArgumentException if an argument is {@code null} or invalid
     * @see #build(ToolchainsBuilderRequest)
     */
    @Nonnull
    default ToolchainsBuilderResult build(

        snapshots = new LinkedHashMap<>();

        /*
         * NOTE: This should be considered a quirk to support interop with Maven's legacy ArtifactDeployer which
         * processes one artifact at a time and hence cannot associate the artifacts from the same project to use the
         * same timestamp+buildno for the snapshot versions. Allowing the caller to pass in metadata from a previous