import java.io.Reader;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;

/**
 * Deeply opinionated file filter that adds elements to the release notes HTML page.
 */
public class ReleaseNotesTransformer extends FilterReader {
    private File baseCss;
    private File releaseNotesCss;
    private File releaseNotesJavascript;
    private Set<File> jqueryFiles;

            task.setDescription("Generates HTML single-page user manual.");
            configureForUserGuideSinglePage(task, extension, project);
            task.outputOptions(options -> options.setBackends(singletonList("html5")));
            // TODO: This breaks the provider
            task.setOutputDir(extension.getUserManual().getStagingRoot().dir("render-single-html").get().getAsFile());
        });

            if (BuildEnvironment.INSTANCE.getJavaVersion().isJava11Compatible()) {
                // TODO html4 output was removed in Java 13, see https://bugs.openjdk.org/browse/JDK-8215578
                options.addBooleanOption("html4", true);
                options.addBooleanOption("-no-module-directories", true);

                FileSystemOperations fs = getFs();

        });
    }

    private static void setStyling(Project project, GradleDocumentationExtension extension) {
        getDokkatooExtension(project).getPluginsConfiguration().named("html", DokkaHtmlPluginParameters.class, config -> {
            config.getCustomStyleSheets().from(extension.getSourceRoot().file("kotlin/styles/gradle.css"));