hash = hash * 31 + Objects.hashCode(plugin.getVersion());

        hash = hash * 31 + (plugin.isExtensions() ? 1 : 0);

        for (Dependency dependency : plugin.getDependencies()) {
            hash = hash * 31 + Objects.hashCode(dependency.getGroupId());
            hash = hash * 31 + Objects.hashCode(dependency.getArtifactId());
            hash = hash * 31 + Objects.hashCode(dependency.getVersion());

        final Parent parent = new Parent();
        parent.setGroupId("ut.simple");
        parent.setArtifactId("artifact");
        parent.setVersion("1.0");

        assertNotNull(this.newModelResolver().resolveModel(parent));
        assertEquals("1.0", parent.getVersion());
    }

    @Test
    void testResolveParentSuccessfullyResolvesExistingParentUsingHighestVersion() throws Exception {

        }

        if (!pluginArtifact.getBaseVersion().equals(pluginDescriptor.getVersion())) {
            errors.add("Plugin's descriptor contains the wrong version: " + pluginDescriptor.getVersion());
        }
    }

            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();

        MavenSession session = createMavenSession(pom);
        assertEquals("project-basic", session.getCurrentProject().getArtifactId());
        assertEquals("1.0", session.getCurrentProject().getVersion());
        List<MojoExecution> executionPlan = getExecutions(calculateExecutionPlan(session, "resources:resources"));
        assertEquals(1, executionPlan.size());
        MojoExecution mojoExecution = executionPlan.get(0);

                                    .setVersion(lowerBound.getVersion().toString())
                            : null;
                    org.eclipse.aether.artifact.Artifact upperArtifact = upperBound != null
                            ? request.getArtifact()
                                    .setVersion(upperBound.getVersion().toString())
                            : null;

    }

    @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();

            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(

                        if (relocation.getVersion() != null) {
                            // note: see MNG-3454. This causes a problem, but fixing it may break more.
                            artifact.setVersionRange(VersionRange.createFromVersion(relocation.getVersion()));
                            relocatedArtifact = artifact;
                            project.setVersion(relocation.getVersion());
                        }