assertEquals("three", pom.getValue(prefix + "stringParams/stringParam[3]"));
        assertEquals("four", pom.getValue(prefix + "stringParams/stringParam[4]"));
        assertEquals("key1", pom.getValue(prefix + "propertiesParam/property[1]/name"));
        assertEquals("key2", pom.getValue(prefix + "propertiesParam/property[2]/name"));
    }

    /* MNG-3864*/
    @Test

    private boolean parallel;

    /**
     * Plugin context keyed by project ({@link MavenProject#getId()}) and by plugin lookup key
     * ({@link PluginDescriptor#getPluginLookupKey()}). Plugin contexts itself are mappings of {@link String} keys to
     * {@link Object} values.
     */
    @SuppressWarnings("checkstyle:linelength")

        Key key = new CacheKey(
                project,
                project.getRemoteProjectRepositories(),
                scopesToCollect,
                scopesToResolve,
                aggregating,
                session);
        return keys.computeIfAbsent(key, k -> k);
    }

    @Override
    public CacheRecord get(Key key) throws LifecycleExecutionException {

        String key = "m2.name";
        String checkValue = "value";

        MavenProject project = createDefaultProject();
        project.getModel().getProperties().setProperty(key, checkValue);

        ExpressionEvaluator ee = createExpressionEvaluator(project, new Properties());

        Object value = ee.evaluate("${" + key + "}");

        assertEquals(checkValue, value);
    }

        } else {
            if (anew) {
                cache = new ConcurrentHashMap<>();
                repositoryCache.put(session, KEY, cache);
            } else {
                cache = (ConcurrentHashMap<Object, Supplier<?>>)
                        repositoryCache.computeIfAbsent(session, KEY, ConcurrentHashMap::new);
            }
            return new DefaultModelCache(cache);
        }
    }

            if (pluginInfo != null) {
                String key = pluginInfo.groupId;
                if (processedPlugins.get(key) == null) {
                    PluginsMetadata pluginMetadata = plugins.get(key);
                    if (pluginMetadata == null) {
                        pluginMetadata = new PluginsMetadata(pluginInfo, timestamp);
                        plugins.put(key, pluginMetadata);
                    }
                }

                for (Dependency dependency : source.getDependencies()) {
                    String key = dependency.getManagementKey();
                    Dependency present = dependencies.putIfAbsent(key, dependency);
                    if (present != null && !equals(dependency, present) && !directDependencies.contains(key)) {
                        // TODO: https://issues.apache.org/jira/browse/MNG-8004
                        problems.add(

                return context.locate(path);
            }

            @Override
            public String getUserProperty(String key) {
                return context.userProperties.computeIfAbsent(
                        key, k -> request.getUserProperties().get(key));
            }

            @Override
            public Model getRawModel(Path from, String gId, String aId) {

        }
    }

    DefaultModelTransformerContext(ModelProcessor modelLocator) {
        this.modelLocator = modelLocator;
    }

    @Override
    public String getUserProperty(String key) {
        return userProperties.get(key);
    }

    @Override
    public Model getRawModel(Path from, Path p) {
        return Holder.deref(modelByPath.get(p));
    }

    @Override

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.internal.impl.resolver.artifact;

/**
 * The keys for Maven specific properties of artifacts. These properties "extend" (or supplement) the Resolver
 * core properties defined in {@link org.eclipse.aether.artifact.ArtifactProperties}.
 *