For example, this class enables syntax such as the following tagged test registration in shorthand form:

   "A Stack (when empty)" should "be empty" taggedAs() in { ... }
                                                       ^
   

This class also enables syntax such as the following tagged, ignored test registration in shorthand form:

   "A Stack (when empty)" should "be empty" taggedAs(SlowTest) ignore { ... }
                                                               ^
   

This class is used via an implicit conversion (named convertToInAndIgnoreMethodsAfterTaggedAs) from ResultOfTaggedAsInvocation. The ResultOfTaggedAsInvocation class does not declare any methods named in, because the type passed to in differs in a FlatSpec and a FixtureFlatSpec. A FixtureFlatSpec needs two in methods, one that takes a no-arg test function and another that takes a one-arg test function (a test that takes a Fixture as its parameter). By constrast, a FlatSpec needs only one in method that takes a by-name parameter. As a result, FlatSpec and FixtureFlatSpec each provide an implicit conversion from ResultOfTaggedAsInvocation to a type that provides the appropriate in methods.