* <p>
     * Shortcut for {@code getService(ArtifactFactory.class).create(...)}.
     *
     * @param coordString the string having "standard" coordinate.
     * @return coordinate used to point to the artifact
     *
     * @see org.apache.maven.api.services.ArtifactCoordinateFactory#create(Session, String)
     */
    @Nonnull
    ArtifactCoordinate createArtifactCoordinate(@Nonnull String coordString);

        }
        return artifactGeneratorFactories;
    }

    protected Map<String, ArtifactGeneratorFactory> createArtifactGeneratorFactories() {
        // by default none, this is extension point
        return new HashMap<>();
    }

    private Map<String, ArtifactDecoratorFactory> artifactDecoratorFactories;

    public final Map<String, ArtifactDecoratorFactory> getArtifactDecoratorFactories() {

                MavenProject parent = parentPomFile != null ? projects.get(parentPomFile.toFile()) : null;
                if (parent == null) {
                    //
                    // At this point the DefaultModelBuildingListener has fired and it populates the
                    // remote repositories with those found in the pom.xml, along with the existing externally
                    // defined repositories.

  }

  /**
   * Creates a <i>mutable</i> {@code HashSet} instance initially containing the given elements.
   *
   * <p><b>Note:</b> if elements are non-null and won't be added or removed after this point, use
   * {@link ImmutableSet#of()} or {@link ImmutableSet#copyOf(Object[])} instead. If {@code E} is an
   * {@link Enum} type, use {@link EnumSet#of(Enum, Enum[])} instead. Otherwise, strongly consider

                if (parent.getRelativePath() == null || parent.getRelativePath().isEmpty()) {
                    buffer.append(" and 'parent.relativePath' points at no local POM");
                } else {
                    buffer.append(" and 'parent.relativePath' points at wrong local POM");
                }
            }

                                Version.V20,
                                prefix + prefix2 + "systemPath",
                                key,
                                "should not point at files within the project directory, " + sysPath
                                        + " will be unresolvable by dependent projects",
                                dependency);
                    }
                }

     *   ...))`
     *
     * So it makes sense for the parameter (and thus the return type) to be @CheckForNull.
     *
     * Two other points:
     *
     * 1. We'll want to use something like @PolyNull once we can make that work for the various
     * platforms we target.
     *