* builds an empty map.
     *
     * <p>If the {@code resolve} parameter value is {@code false}, then some or all map values may
     * be null instead of the actual module name. This option can avoid the cost of reading module
     * descriptors when only the modules existence needs to be verified.</p>
     *
     * <p><b>Algorithm:</b>
     * If the given path is a directory, then there is a choice:
     * </p>
     * <ul>

  the file:// protocol and living on a truly local filesystem when
  offline.

** Plugin Resolution

  This is similar to dependency resolution. Plugin repositories not
  using file:// or not residing on a local (not shared) filesystem will
  be unavailable.


* Implications for Mojo Execution

** Deployment mojos

  The concept of deployment is dependent on the availability of a some

     * builds an empty map.
     *
     * <p>If the {@code resolve} parameter value is {@code false}, then some or all map values may
     * be null instead of the actual module name. This option can avoid the cost of reading module
     * descriptors when only the modules existence needs to be verified.</p>
     *
     * <p><b>Algorithm:</b>
     * If the given path is a directory, then there is a choice:
     * </p>
     * <ul>

     * @param test the test output directory, or {@code null} if none
     * @param cache cache of module information about each dependency
     * @throws IOException if an error occurred while reading module information
     *
     * TODO: this is currently not called
     */
    void addOutputDirectory(Path main, Path test, PathModularizationCache cache) throws IOException {
        if (outputModules != null) {

     * @param test the test output directory, or {@code null} if none
     * @param cache cache of module information about each dependency
     * @throws IOException if an error occurred while reading module information
     *
     * TODO: this is currently not called
     */
    void addOutputDirectory(Path main, Path test, PathModularizationCache cache) throws IOException {
        if (outputModules != null) {