Tag that indicates a Selenium test uses the HtmlUnit browser.
Note: This is actually an annotation defined in Java, not a Scala trait. It must be defined in Java instead of Scala so it will be accessible
at runtime. It has been inserted into Scaladoc by pretending it is a trait.
Note that because reflection is not supported on Scala.js, this annotation will only work on the JVM, not on Scala.js.