Map<Class<? extends @NonNull B>, B> backingMap) {
    return new MutableClassToInstanceMap<>(backingMap);
  }

  private final Map<Class<? extends @NonNull B>, B> delegate;

  private MutableClassToInstanceMap(Map<Class<? extends @NonNull B>, B> delegate) {
    this.delegate = checkNotNull(delegate);
  }

  @Override
  protected Map<Class<? extends @NonNull B>, B> delegate() {
    return delegate;
  }

    MessageBuilder resetStyle();

    //
    // message building methods modelled after Ansi methods
    //

    @Nonnull
    @Override
    MessageBuilder append(CharSequence cs);

    @Nonnull
    @Override
    MessageBuilder append(CharSequence cs, int start, int end);

    @Nonnull
    @Override
    MessageBuilder append(char c);

    /**
     * Append content to the message buffer.
     *

    }

    @Nonnull
    @Override
    public Collection<SourceRoot> getSourceRoots(@Nonnull Project project) {
        MavenProject prj = getMavenProject(requireNonNull(project, "project" + " cannot be null"));
        return prj.getSourceRoots();
    }

    @Nonnull
    @Override
    public Stream<SourceRoot> getEnabledSourceRoots(@Nonnull Project project, ProjectScope scope, Language language) {

     */
    @Nonnull
    default ArtifactCoordinates create(@Nonnull Session session, @Nonnull String coordinatesString) {
        return create(ArtifactCoordinatesFactoryRequest.build(session, coordinatesString));
    }

    @Nonnull
    default ArtifactCoordinates create(
            @Nonnull Session session, String groupId, String artifactId, String version, String extension) {

    /**
     * {@return the group identifier of the artifact}.
     *
     * @see ArtifactCoordinates#getGroupId()
     */
    @Nonnull
    String getGroupId();

    /**
     * {@return the identifier of the artifact}.
     *
     * @see ArtifactCoordinates#getArtifactId()
     */
    @Nonnull
    String getArtifactId();

    /**
     * {@return the version of the artifact}.

          <item index="5" class="java.lang.String" itemvalue="io.reactivex.annotations.NonNull" />
          <item index="6" class="java.lang.String" itemvalue="io.reactivex.rxjava3.annotations.NonNull" />
          <item index="7" class="java.lang.String" itemvalue="jakarta.annotation.Nonnull" />
          <item index="8" class="java.lang.String" itemvalue="javax.annotation.Nonnull" />

    List<Lifecycle> getLifecycles();

    @Nonnull
    ClassLoader getClassLoader();

    @Nonnull
    Artifact getArtifact();

    @Nonnull
    default Collection<Dependency> getDependencies() {
        return getDependenciesMap().values();
    }

    @Nonnull
    Map<String, Dependency> getDependenciesMap();

     *
     * @return The source from which the model was read, never {@code null}.
     */
    @Nonnull
    ModelSource getSource();

    /**
     * Gets the file model.
     *
     * @return the file model, never {@code null}.
     */
    @Nonnull
    Model getFileModel();

    /**
     * Gets the file model + build pom transformation, without inheritance nor interpolation.
     *

  private final Map<TypeToken<? extends @NonNull B>, B> backingMap = new HashMap<>();

  @Override
  public <T extends @NonNull B> @Nullable T getInstance(Class<T> type) {
    return trustedGet(TypeToken.of(type));
  }

  @Override
  public <T extends @NonNull B> @Nullable T getInstance(TypeToken<T> type) {
    return trustedGet(type.rejectTypeVariables());
  }

  @Override
  @CanIgnoreReturnValue

     *
     * @return the identifier of the project or an empty string if not known, never {@code null}
     */
    @Nonnull
    String getProjectId();

    /**
     * Gets the POM file from which the project was built.
     *
     * @return the optional POM file
     */
    @Nonnull
    Optional<Path> getPomFile();

    /**
     * Gets the project that was built.
     *