Add tabs tour named args

_tour/named-arguments.md

@@ -8,26 +8,38 @@ next-page: traits
 previous-page: default-parameter-values
 prerequisite-knowledge: function-syntax
 
-redirect_from: 
+redirect_from:
   - "/tutorials/tour/named-arguments.html"
   - "/tutorials/tour/named-parameters.html"
 ---
 
 When calling methods, you can label the arguments with their parameter names like so:
 
+{% tabs named-arguments-when-good %}
+
+{% tab 'Scala 2 and 3' for=named-arguments-when-good %}
 ```scala mdoc
-def printName(first: String, last: String): Unit = {
+def printName(first: String, last: String): Unit =
   println(first + " " + last)
-}
 
 printName("John", "Smith")  // Prints "John Smith"
 printName(first = "John", last = "Smith")  // Prints "John Smith"
 printName(last = "Smith", first = "John")  // Prints "John Smith"
 ```
+{% endtab %}
+
+{% endtabs %}
+
 Notice how the order of named arguments can be rearranged. However, if some arguments are named and others are not, the unnamed arguments must come first and in the order of their parameters in the method signature.
 
+{% tabs named-arguments-when-error %}
+
+{% tab 'Scala 2 and 3' for=named-arguments-when-error %}
 ```scala mdoc:fail
 printName(last = "Smith", "john") // error: positional after named argument
 ```
+{% endtab %}
+
+{% endtabs %}
 
 Named arguments work with calls to Java methods, but only if the Java library in question was compiled with `-parameters`.