* For example, an artifact of type {@value org.apache.maven.api.Type#JAR} can be placed
     * either on the class-path or on the module-path. The project needs to make a choice
     * (possibly using heuristic rules), then to add the dependency in only one of the options
     * identified by {@link PathType}.</p>
     *
     * @return file paths to place on the different tool options
     */

     * {@link Session#resolveDependencies resolveDependencies(...)} when at least one dependency
     * cannot be associated to any type specified in the {@code desiredTypes} argument.
     * Plugins can choose to report a warning to users when unresolved paths exist.
     */
    PathType UNRESOLVED = new PathType() {
        @Override
        public String name() {
            return "UNRESOLVED";
        }