fileResolver.resolve('file') >> manifestFile

        when:
        manifest.writeTo('file')
        Manifest fileManifest = manifestFile.withReader { new Manifest(it) }
        Manifest expectedManifest = new Manifest()
        expectedManifest.addConfiguredAttribute(new Attribute('key1', 'value1'))

        @Receiver File self,
        Closure<?> closure,
        @CallerClassName String consumer
    ) throws IOException {
        Instrumented.fileOpened(self, consumer);
        return ResourceGroovyMethods.withReader(self, closure);
    }

    @InterceptGroovyCalls
    @InstanceMethod
    @WithExtensionReferences(toClass = ResourceGroovyMethods.class)
    public static Object intercept_withReader(

import javax.annotation.Nullable

class GradleModuleMetadata {
    private Map<String, Object> values
    private List<Variant> variants

    GradleModuleMetadata(TestFile file) {
        file.withReader { r ->
            JsonReader reader = new JsonReader(r)
            values = readObject(reader)
        }
        assert values.formatVersion == '1.1'

        new JsonSlurper().parseText(jsonText) as Map<String, Object>
    }

    private static String linesBetween(File file, String beginLine, String endLine) {
        return file.withReader('utf-8') { reader ->
            reader.lines().iterator()
                .dropWhile { it != beginLine }
                .drop(1)
                .takeWhile { it != endLine }
                .collect()