}
                    });

                    // 5) register fact that antlr should be run before compiling
                    project.getTasks().named(sourceSet.getCompileJavaTaskName(), new Action<Task>() {
                        @Override
                        public void execute(Task task) {
                            task.dependsOn(taskName);
                        }

    }

    @Override
    public String getCompileTaskName(String language) {
        return getTaskName("compile", language);
    }

    @Override
    public String getCompileJavaTaskName() {
        return getCompileTaskName("java");
    }

    @Override
    public String getProcessResourcesTaskName() {
        return getTaskName("process", "resources");
    }

    @Override

        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.

Method <org.gradle.api.tasks.SourceSet.getCompileClasspathConfigurationName()> does not have raw return type assignable to org.gradle.api.provider.Provider in (SourceSet.java:0)
Method <org.gradle.api.tasks.SourceSet.getCompileJavaTaskName()> does not have raw return type assignable to org.gradle.api.provider.Provider in (SourceSet.java:0)