Annotation used to mark a trait or class as defining a testing style that has a org.scalatest.finders.Finder implementation,
which IDEs and other tools can use to discover tests and scopes.
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.
This annotation is used to enable different styles of testing, including both native ScalaTest styles and custom user-created styles, to
have rich IDE support. The "Finder API" is released separately from ScalaTest proper, because it is only used by tools such as IDEs.