fun test() {
    buildFoo {
        value = <expr>produceString()</expr>
    }
}

fun buildFoo(builder: Foo.() -> Unit): Foo {
    val foo = Foo()
    foo.builder()
    return foo
}

fun Foo {
    var value: String? = null
}

fun test() {
    buildFoo {
        <expr>value</expr> = produceString()
    }
}

fun buildFoo(builder: Foo.() -> Unit): Foo {
    val foo = Foo()
    foo.builder()
    return foo
}

class Foo {
    var value: String? = null
}

    @ComponentBinaries
    void generateDocBinaries(ModelMap<DocumentationBinary> binaries, VariantComponentSpec component, @Path("buildDir") File buildDir) {
        binaries.create("exploded") { binary ->
            outputDir = new File(buildDir, "${component.name}/${binary.name}")
        }
    }
// end::binaries-generation[]

// tag::text-tasks-generation[]
    @BinaryTasks

        @ComponentType
        public void registerCUnitTestSuiteSpecType(TypeBuilder<CUnitTestSuiteSpec> builder) {
            builder.defaultImplementation(DefaultCUnitTestSuiteSpec.class);
        }

        @Mutate
        public void configureCUnitTestSuiteSources(@Each final CUnitTestSuiteSpec suite, @Path("buildDir") final File buildDir) {
            suite.getSources().create(CUNIT_LAUNCHER_SOURCE_SET, CSourceSet.class, new Action<CSourceSet>() {

        public void registerGoogleTestSuiteSpecTest(TypeBuilder<GoogleTestTestSuiteSpec> builder) {
            builder.defaultImplementation(DefaultGoogleTestTestSuiteSpec.class);
        }

        @ComponentType
        public void registerGoogleTestSuiteBinaryType(TypeBuilder<GoogleTestTestSuiteBinarySpec> builder) {
            builder.defaultImplementation(DefaultGoogleTestTestSuiteBinary.class);
        }

      new DslObject(p).getExtensions().getExtraProperties().set("prop", "value");
    }
}
'''
        builder.resourceFile('META-INF/gradle-plugins/custom.properties') << '''
implementation-class=CustomPlugin
'''
        builder.buildJar(file('external.jar'))

        and:
        file('build.gradle') << '''
buildscript {
    dependencies {
        classpath files('external.jar')
    }
}
apply plugin: 'custom'

			go2obj := filepath.Join(buildDir, "go2.o")
			goarchive := filepath.Join(buildDir, "go.a")
			cgoarchive := ""

			gotool, err := testenv.GoTool()
			if err != nil {
				return err
			}

			go1src := filepath.Join("testdata", "go1.go")
			go2src := filepath.Join("testdata", "go2.go")

			importcfgfile := filepath.Join(buildDir, "importcfg")

            Path buildDir =
                    project.getBuild() != null ? Paths.get(project.getBuild().getDirectory()) : null;
            if (buildDir != null) {
                Files.createDirectories(buildDir);
            }
            Path consumer = buildDir != null
                    ? Files.createTempFile(buildDir, CONSUMER_POM_CLASSIFIER + "-", ".pom")

    }

    @Test
    public void canExtendTheDefaultBuildForBuildSrcProject() {
        ArtifactBuilder builder = artifactBuilder();
        builder.sourceFile("org/gradle/test/DepClass.java").writelns(
                "package org.gradle.test;",
                "public class DepClass { }"
        );
        builder.buildJar(testFile("repo/test-1.3.jar"));

        testFile("buildSrc/build.gradle").writelns(

        actualJar1.name == implJar.name

        when:
        builder.sourceFile('ActionImpl.java').text = """
public class ActionImpl implements ${BuildAction.name}<String> {
    public String execute(${BuildController.name} controller) {
        return getClass().getProtectionDomain().getCodeSource().getLocation().toString();
    }
}
"""
        builder.buildJar(implJar)