private String testClass;
    private List<String> extraArgs = new ArrayList<>();

    public void setTaskName(String taskName) {
        this.taskName = taskName;
    }

    @Input
    public String getTaskName() {
        return taskName;
    }

    @Option(option = "tests", description = "Sets test class or method name to be included, '*' is supported.")
    public void setTestClass(String testClass) {

          override fun getRuntimeOnlyConfigurationName(): String = jvmMainSourceSet.runtimeOnlyConfigurationName + "ForFakeMain"

          override fun getTaskName(
            verb: String?,
            target: String?,
          ) = "${jvmMainSourceSet.getTaskName(verb, target)}ForFakeMain"
        }
      sourceSets.add(mainSourceSet)
      project.tasks.named { it.endsWith("ForFakeMain") }.configureEach { onlyIf { false } }

        projectDirectory.dir(it.single().asFile.absolutePath).dir("checkstyle")
    }
}

plugins.withType<GroovyBasePlugin> {
    the<SourceSetContainer>().all {
        tasks.register<Checkstyle>(getTaskName("checkstyle", "groovy")) {
            config = configFile("checkstyle-groovy.xml")
            source(allGroovy)
            classpath = compileClasspath