OutputStreamWriter outputStream = new OutputStreamWriter(new FileOutputStream(destination), outputEncoding)) {
            String html = renderer.render(parser.parseReader(inputStream));
            outputStream.write(html);
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

     */
    public abstract DirectoryProperty getStagingRoot();

    /**
     * The final location to place all rendered documentation.
     */
    public abstract DirectoryProperty getDocumentationRenderedRoot();

    /**
     * The collection of rendered documentation.  This is everything laid out as it would be deployed/packaged.
     */

    public abstract Property<URI> getGroovyApi();

    /**
     * The CSS file to style Javadocs with
     */
    public abstract RegularFileProperty getJavadocCss();

    /**
     * A collection of the final rendered Javaodcs
     */
    public abstract ConfigurableFileCollection getRenderedDocumentation();

     */
    public abstract DirectoryProperty getStagingRoot();

    public abstract RegularFileProperty getGeneratedMetaDataFile();

    /**
     * The fully rendered documentation with all of its necessary resources.
     */
    public abstract ConfigurableFileCollection getRenderedDocumentation();

import org.gradle.api.provider.Property;

/**
 * Configuration for generating Dokka based Kotlin DSL docs.
 */
public abstract class KotlinDslReference {

    /**
     * The location of the final rendered Dokka content.
     */
    public abstract DirectoryProperty getRenderedDocumentation();

    /**
     * The Dokka version to use instead the default one Dokkatoo is configured with.

    /**
     * The Jquery file to include in the release notes.
     */
    public abstract ConfigurableFileCollection getJquery();

    // TODO: Need staging root property too

    /**
     * The collection of rendered documentation.
     */
    public abstract RegularFileProperty getRenderedDocumentation();

    /**
     * Additional resources to include in the final docs
     */
    public abstract ConfigurableFileCollection getResources();

    /**
     * A collection of the final rendered user manual
     */
    public abstract ConfigurableFileCollection getRenderedDocumentation();

import java.io.File;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

/**
 * Takes a rendered release notes HTML file and decorates it with extra elements/content/links.
 */
@CacheableTask
public abstract class DecorateReleaseNotes extends DefaultTask {
    /**
     * The rendered HTML release notes that need decoration.
     */
    @InputFile
    @PathSensitive(PathSensitivity.NONE)

        TaskProvider<Sync> userguide = tasks.register("userguide", Sync.class, task -> {
            task.setGroup("documentation");
            task.setDescription("Stages rendered user manual documentation.");

            task.from(userguideSinglePageHtml);
            task.from(userguideSinglePagePdf);
            task.from(userguideMultiPage);

            task.getInputs().property("systemProperties", Collections.emptyMap());
            // TODO: This breaks the provider
            task.systemProperty("org.gradle.docs.releasenotes.rendered", extension.getReleaseNotes().getRenderedDocumentation().get().getAsFile());
        });
    }