result.addException(exception);
                    }
                }
            } else {
                String key = SNAPSHOT + getKey(artifact.getClassifier(), artifact.getExtension());
                merge(infos, SNAPSHOT, key);
                if (!resolve(result, infos, key)) {
                    result.setVersion(version);
                }
            }

                    new org.eclipse.aether.artifact.DefaultArtifact(
                            dependency.getGroupId(),
                            dependency.getArtifactId(),
                            dependency.getClassifier(),
                            dependency.getType().getExtension(),
                            dependency.getVersion().toString(),
                            null),
                    dependency.getScope().id());

    }

    // TODO: this is duplicate of PomArtifactHandlerProvider provided one
    static class PomArtifactHandler implements ArtifactHandler {
        @Override
        public String getClassifier() {
            return null;
        }

        @Override
        public String getDirectory() {
            return null;
        }

        @Override
        public String getExtension() {

                artifact.getClassifier(),
                artifact.getBaseVersion());
    }

    private static String getId(ClassRealmConstituent constituent) {
        return getId(
                constituent.getGroupId(),
                constituent.getArtifactId(),
                constituent.getType(),
                constituent.getClassifier(),
                constituent.getVersion());
    }

     */
    String getType();

    /**
     * Gets the classifier of the constituent's artifact.
     *
     * @return The classifier or an empty string, never {@code null}.
     */
    String getClassifier();

    /**
     * Gets the version of the constituent's artifact.
     *
     * @return The version, never {@code null}.
     */
    String getVersion();

    /**

        this.classifier = classifier;
        this.extension = requireNonNull(extension);
        this.packaging = requireNonNull(packaging);
    }

    @Override
    public String getClassifier() {
        return classifier;
    }

    @Override
    public String getDirectory() {
        return null;
    }

    @Override
    public String getExtension() {
        return extension;

        when(artifact.getGroupId()).thenReturn("group1");
        when(artifact.getArtifactId()).thenReturn("artifact1");
        when(artifact.getExtension()).thenReturn("ext");
        when(artifact.getClassifier()).thenReturn("classifier1");
        when(artifact.getVersion()).thenReturn("1");
        artifacts.add(artifact);

        Artifact artifact2 = mock(Artifact.class);
        when(artifact2.getFile()).thenReturn(null);

            for (Dependency dependency : project.getDependencies()) {
                String classifier = dependency.getClassifier();
                if (classifier == null) {
                    ArtifactType type = stereotypes.get(dependency.getType());
                    if (type != null) {
                        classifier = type.getClassifier();
                    }
                }
                String key = ArtifactIdUtils.toVersionlessId(

     * Get the default classifier associated to the dependency type.
     * The default classifier can be overridden when specifying
     * the {@link Dependency#getClassifier()}.
     *
     * @return the default classifier, or {@code null}.
     */
    @Nullable
    String getClassifier();

    /**
     * Specifies if the artifact already embeds its own dependencies.
     * This is the case for JEE packages or similar artifacts such as

    String getExtension();

    String getDirectory();

    /**
     * Returns the default classifier used if a different one is not set in pom.xml.
     *
     * @return the classifier
     */
    String getClassifier();

    String getPackaging();

    boolean isIncludesDependencies();

    String getLanguage();

    /**
     * Specifies if the artifact contains java classes and can be added to the classpath.