sourceSet.groovy.filter.excludes.isEmpty()

        sourceSet.allGroovy.isEmpty()
        sourceSet.allGroovy.displayName =='<display-name> Groovy source'
        sourceSet.allGroovy.srcDirs.containsAll(sourceSet.groovy.files)
        sourceSet.allGroovy.filter.includes.containsAll(['**/*.groovy'])
        sourceSet.allGroovy.filter.excludes.isEmpty()
    }

    void canConfigureGroovySource() {

    private final SourceDirectorySet allGroovy;

    @Inject
    public DefaultGroovySourceSet(String name, String displayName, ObjectFactory objectFactory) {
        this.groovy = createGroovySourceDirectorySet(name, displayName, objectFactory);
        allGroovy = objectFactory.sourceDirectorySet("all" + name, displayName + " Groovy source");
        allGroovy.source(groovy);
        allGroovy.getFilter().include("**/*.groovy");
    }

                <td><literal>[<replaceable>${project.projectDir}</replaceable>/src/<replaceable>${sourceSet.name}</replaceable>/groovy]</literal></td>
            </tr>
            <tr>
                <td>allGroovy</td>
                <td><literal>[groovy]</literal></td>
            </tr>
        </table>
    </section>
    <section>
        <title>Methods</title>
        <table>
            <thead>

plugins.withType<GroovyBasePlugin> {
    the<SourceSetContainer>().all {
        tasks.register<Checkstyle>(getTaskName("checkstyle", "groovy")) {
            config = configFile("checkstyle-groovy.xml")
            source(allGroovy)
            classpath = compileClasspath
            reports.xml.outputLocation = checkstyle.reportsDir.resolve("${******@****.***}-groovy.xml")
        }
    }
}

codenarc {

                <td><literal>project.codenarc.ignoreFailures</literal></td>
            </tr>
            <tr>
                <td>source</td>
                <td><literal><replaceable>sourceSet</replaceable>.allGroovy</literal></td>
            </tr>
            <tr>
                <td>codenarcClasspath</td>
                <td><literal>project.configurations.codenarc</literal></td>
            </tr>
            <tr>

`allGroovy` — link:{javadocPath}/org/gradle/api/file/FileTree.html[FileTree] (read-only)::
_Default value_: Not null
+
All Groovy source files of this source set. Contains only the `.groovy` files found in the Groovy source directories.