Map<String, Vertex> vertices = vertexMap.computeIfAbsent(projectKey, k -> new HashMap<>(2, 1));

            vertices.put(project.getVersion(), graph.addVertex(projectId));
        }

        for (Vertex projectVertex : graph.getVertices()) {
            String projectId = projectVertex.getLabel();

    }

    @Override
    public String getVersion() {
        if (version != null) {
            return version;
        } else {
            return artifact.getVersion();
        }
    }

    // Revise these three methods when MRESOLVER-233 is delivered
    @Override
    public Artifact setVersion(String version) {
        String current = getVersion();

        // We can do this by calling isChildOfRootNode on the current node.
        if ((artifact.getVersion() != null)
                && (!node.isChildOfRootNode() || node.getArtifact().getVersion() == null)) {
            fireEvent(ResolutionListener.MANAGE_ARTIFACT_VERSION, listeners, node, artifact);
            node.getArtifact().setVersion(artifact.getVersion());
        }

        if ((artifact.getScope() != null)

            pluginInPom = findPlugin(plugin, project.getPluginManagement().getPlugins());
        }

        if (pluginInPom != null) {
            if (plugin.getVersion() == null) {
                plugin.setVersion(pluginInPom.getVersion());
            }

            plugin.setDependencies(new ArrayList<>(pluginInPom.getDependencies()));
        }
    }

                        a.getGroupId() + ":" + a.getArtifactId()))
                .filter(a -> a.getVersion().startsWith("3."))
                .map(a -> a.getGroupId() + ":" + a.getArtifactId() + ":" + a.getVersion())
                .collect(Collectors.toSet());

        if (!mavenArtifacts.isEmpty()) {
            pluginValidationManager.reportPluginValidationIssue(

        // TODO Should this be changed for MNG-6754 too?
        versioning.updateTimestamp();
        versioning.addVersion(artifact.getVersion());

        if (artifact.isRelease()) {
            versioning.setRelease(artifact.getVersion());
        }

        return new ArtifactRepositoryMetadata(artifact, versioning);
    }

    @Override

        return artifactId;
    }

    public void setArtifactId(String artifactId) {
        this.artifactId = artifactId;
    }

    public String getVersion() {
        return version;
    }

    public void setVersion(String version) {
        this.version = version;
    }

    public String getClassifier() {
        return classifier;
    }

            Artifact artifact = (Artifact) iter.next();
            System.out.println("Artifact: " + artifact.getDependencyConflictId() + " " + artifact.getVersion()
                    + " Optional=" + (artifact.isOptional() ? "true" : "false"));
            assertTrue(
                    artifact.getVersion().equals("1.0"), "Incorrect version for " + artifact.getDependencyConflictId());
        }
    }

        assertEquals("1", childProject.getParentArtifact().getVersion());
        assertNotNull(childProject.getParent());
        assertEquals("1", childProject.getParent().getVersion());
        assertNotNull(childProject.getModel().getParent());
        assertEquals("[1,10]", childProject.getModel().getParent().getVersion());
    }

    /**

     */
    @Nonnull
    Version getVersion();

    /**
     * {@return the version or meta-version of the artifact}.
     * A meta-version is a version suffixed with the {@code SNAPSHOT} keyword.
     * Meta-versions are represented in a base version by their symbols (e.g., {@code SNAPSHOT}),
     * while they are replaced by, for example, the actual timestamp in the {@linkplain #getVersion() version}.
     */
    @Nonnull