attributes.put("jdkDownloadUrl", "https://jdk.java.net/");
            // TODO: This is coupled to extension.getJavadocs().getJavaApi()
            attributes.put("javadocReferenceUrl", "https://docs.oracle.com/javase/8/docs/technotes/tools/windows/javadoc.html");
            // TODO: This is coupled to extension.getJavadocs().getJavaApi()
            attributes.put("minJdkVersion", "8");

The task supports the core Javadoc and standard doclet options described in the link:{javadocReferenceUrl}#options[Javadoc reference documentation].