<target name="install.module">
		<get dest="${target.dir}">
			<url url="${repo.url}/${module.groupId}/${module.name.prefix}${module.name}/${module.version}/${module.name.prefix}${module.name}-${module.zip.version}.zip" />
		</get>
		<unzip dest="${modules.dir}/${module.name}" src="${target.dir}/${module.name.prefix}${module.name}-${module.zip.version}.zip">
			<patternset>
				<include name="**" />
			</patternset>
			<cutdirsmapper dirs="1" />

    /**
     * Returns the modules required by this module.
     */
    Set<Module> getRequiredModules();

    /**
     * Returns the transitive closure of all modules required by this module, including the module itself.
     */
    Set<Module> getAllRequiredModules();

    /**
     * Returns the implementation + runtime classpath of the transitive closure of all modules required by this module, including the module itself.

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package module defines the module.Version type along with support code.
//
// The [module.Version] type is a simple Path, Version pair:
//
//	type Version struct {
//		Path string
//		Version string
//	}
//
// There are no restrictions imposed directly by use of this structure,

 * of project dependencies. This optimizes module loading during runtime, as we will only load external
 * modules that are not loaded transitively by other project modules.
 *
 * We perform this filtering, since if we simply include all external dependencies, regardless of whether
 * they are already loaded transitively, there is a measurable performance impact during module-loading.
 */

        def module2 = registry.getModule("gradle-module-2")
        module1.allRequiredModules as List == [module1, module2]
        module2.allRequiredModules as List == [module2, module1]
    }

    def "supports cycles between optional modules"() {
        given:
        def module1Dir = createModule("module-1", properties(optional: 'gradle-optional-module,gradle-module-2'))

        allProjects.rootIdeaProject.name == 'module-main'
        allProjects.rootIdeaProject.modules.collect { it.name } == ['module-main', 'module-main-module-b']

        allProjects.getIdeaProject('module-main').modules.collect { it.name } == ['module-main', 'module-main-module-b']

  <modules>
    <module>maven-api-meta</module>
    <module>maven-api-di</module>
    <module>maven-api-xml</module>
    <module>maven-api-model</module>
    <module>maven-api-plugin</module>
    <module>maven-api-settings</module>
    <module>maven-api-toolchain</module>
    <module>maven-api-metadata</module>
    <module>maven-api-core</module>
    <module>maven-api-spi</module>
  </modules>

    }

    private Set<Module> allRequiredModulesOf(String... names) {
        Set<Module> modules = new HashSet<>();
        for (String name : names) {
            modules.addAll(moduleRegistry.getModule(name).getAllRequiredModules());
        }
        return modules;
    }

    private Set<Module> allRequiredModulesOfOptional(String moduleName) {
        Module optionalModule = moduleRegistry.findModule(moduleName);

    /**
     * {@return the type of path detected}. The return value is {@link JavaPathType#MODULES}
     * if the dependency is a modular JAR file or a directory containing module descriptor(s),
     * or {@link JavaPathType#CLASSES} otherwise. A JAR file without module descriptor but with
     * an "Automatic-Module-Name" manifest attribute is considered modular.
     */
    public JavaPathType getPathType() {

    }

    @Override
    public Module getModule(String name) {
        Module module = modules.get(name);
        if (module == null) {
            module = loadModule(name);
            modules.put(name, module);
        }
        return module;
    }

    @Override
    @Nullable
    public Module findModule(String name) {
        Module module = modules.get(name);
        if (module == null) {