</params>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <excludes>
            <exclude>**/package-info.java</exclude>
          </excludes>
        </configuration>
      </plugin>
    </plugins>

        @Override
        public V computeIfPresent(K key, BiFunction<? super K, ? super V, ? extends V> remappingFunction) {
            throw uoe();
        }

        @Override
        public V compute(K key, BiFunction<? super K, ? super V, ? extends V> remappingFunction) {
            throw uoe();
        }

        @Override

                .getOrDefault(artifact.getBaseVersion(), null);
    }

    // groupId -> (artifactId -> (version -> project)))
    private Map<String, Map<String, Map<String, MavenProject>>> getAllProjects() {
        // compute the projects mapping
        if (allProjects == null) {
            List<MavenProject> allProjects = session.getAllProjects();
            if (allProjects != null) {

 2. it works without problems only for projects with relative paths, e.g., from
 one CVS repository.. for projects from multiple SCM repositories it's harder
 to maintain the same relative links on all developer computers.
 not sure the unified source directory structure addresses this issue.

 Properties

 maven.user.config.dir (system,default=${user.home}/.m2)
 maven.home            (system,user,default=${user.home}/m2)

<img src="/img/tutorial/path-params/image03.png">

### Manipuler les *énumérations* Python

La valeur du *paramètre de chemin* sera un des "membres" de l'énumération.

#### Comparer les *membres d'énumération*

Vous pouvez comparer ce paramètre avec les membres de votre énumération `ModelName` :

{* ../../docs_src/path_params/tutorial005.py hl[17] *}

#### Récupérer la *valeur de l'énumération*

                                DEFAULT,
                                PluginContainer.newBuilder()
                                        .plugins(List.of(
                                                newPlugin("maven-compiler-plugin", "compile", "testCompile"),
                                                newPlugin("maven-resources-plugin", "resources", "testResources"),

                                DEFAULT,
                                PluginContainer.newBuilder()
                                        .plugins(List.of(
                                                newPlugin("maven-compiler-plugin", "compile", "testCompile"),
                                                newPlugin("maven-resources-plugin", "resources", "testResources"),

        // the value for the key is already being computed.
        computingValueReference = new ComputingValueReference<>(valueReference);

        // Compute the value now, so if it throws an exception we don't change anything.
        newValue = computingValueReference.compute(key, function);

        if (e == null) {
          createNewEntry = true;

            </Import-Package>
            <Bundle-DocURL>https://github.com/google/guava/</Bundle-DocURL>
          </instructions>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <executions>
          <execution>
            <id>default-compile</id>
            <configuration>
              <compilerArgs combine.children="append" combine.self="append">

        Build build = project4.getBuild();
        List<Plugin> plugins = build.getPlugins();

        Map<String, Integer> validPluginCounts = new HashMap<>();

        String testPluginArtifactId = "maven-compiler-plugin";

        // this is the plugin we're looking for.
        validPluginCounts.put(testPluginArtifactId, 0);

        // these are injected if -DperformRelease=true