this.protocol = protocol(url);
        this.basedir = basedir(url);
    }

    // Path Utils

    /**
     * Return the protocol name.
     * <br>
     * E.g: for input
     * <code>http://www.codehaus.org</code> this method will return <code>http</code>
     *
     * @param url the url
     * @return the host name
     */
    private static String protocol(final String url) {

        if (lifecycleMappings == null) {
            LifecycleConfiguration lifecycleConfiguration;

            try (InputStream input = getDescriptorStream(LIFECYCLE_DESCRIPTOR)) {
                lifecycleConfiguration = new LifecycleStaxReader().read(input);
            }

            lifecycleMappings = new HashMap<>();

            for (Lifecycle lifecycle : lifecycleConfiguration.getLifecycles()) {

        }
    }

    /**
     * @deprecated use {@link #build(StreamSupplier, String)}
     */
    @Deprecated
    public PluginDescriptor build(InputStream input, String source) throws PlexusConfigurationException {
        return build(() -> input, source);
    }

    public PluginDescriptor build(StreamSupplier inputSupplier) throws PlexusConfigurationException {
        return build(inputSupplier, null);
    }

        return children.size();
    }

    // ----------------------------------------------------------------------
    // Input location handling
    // ----------------------------------------------------------------------

    /**
     * @since 3.2.0
     * @return input location
     */
    public Object getInputLocation() {
        return location;
    }

 * <h2>Relationship with Java compiler standard location</h2>
 * This enumeration is closely related to the {@link JavaFileManager.Location} enumerations.
 * A difference is that the latter enumerates input and output files, while {@code JavaPathType}
 * enumerates only input dependencies. Another difference is that {@code JavaPathType} contains
 * some enumeration values used only at runtime and therefore not available in {@code javax.tool},
 * such as agent paths.
 *

    // -----------------------------------------------------------------------------------------------

    // TODO These two tests display a lack of symmetry with respect to the input which is a free form string and the
    //      mojo descriptor which comes back. All the free form parsing needs to be done somewhere else, this is

        }
        descriptors = Collections.emptyMap();
        isModuleHierarchy = false;
    }

    /**
     * {@return the module name declared in the given {@code module-info} descriptor}.
     * The input stream may be for a file or for an entry in a JAR file.
     */
    @Nonnull
    private static String getModuleName(InputStream in) throws IOException {
        return ModuleDescriptor.read(in).name();
    }

        // TODO this needs to be repeated here so the merging doesn't interfere with the written metadata
        //  - we'd be much better having a pristine input, and an ongoing metadata for merging instead

        Map<ArtifactRepository, Metadata> previousMetadata = new HashMap<>();
        ArtifactRepository selected = null;

   |
   | Default: ${user.home}/.m2/repository
  <localRepository>/path/to/local/repo</localRepository>
  -->

  <!-- interactiveMode
   | This will determine whether maven prompts you when it needs input. If set to false,
   | maven will use a sensible default value, perhaps based on some other setting, for
   | the parameter in question.
   |
   | Default: true
  <interactiveMode>true</interactiveMode>
  -->

     */
    boolean isLocationTracking();

    /**
     * Enables/disables the tracking of line/column numbers for the model source being parsed. By default, input
     * locations are not tracked.
     *
     * @param locationTracking {@code true} to enable location tracking, {@code false} to disable it.
     * @return This request, never {@code null}.
     */