final TaskProvider<JavaCompile> compileTask = project.getTasks().register(sourceSet.getCompileJavaTaskName(), JavaCompile.class, javaCompile -> {
            ConventionMapping conventionMapping = javaCompile.getConventionMapping();
            conventionMapping.map("classpath", sourceSet::getCompileClasspath);

    String getProcessResourcesTaskName();

    /**
     * Returns the name of the compile Java task for this source set.
     *
     * @return The task name. Never returns null.
     */
    String getCompileJavaTaskName();

    /**
     * Returns the name of a compile task for this source set.
     *
     * @param language The language to be compiled.
     * @return The task name. Never returns null.
     */

        RoleBasedConfigurationContainerInternal configurations = project.getConfigurations();
        TaskContainer tasks = project.getTasks();

        this.compileJava = tasks.named(sourceSet.getCompileJavaTaskName(), JavaCompile.class);
        this.jar = registerOrGetJarTask(sourceSet, tasks);

        // If extendProductionCode=false, the source set has already created these configurations.