Add code tabs for _overviews/scala3-book/types-intersection.md (#2653)

Author: jglodek

Diff for: _overviews/scala3-book/types-intersection.md

@@ -7,12 +7,16 @@ num: 50
 previous-page: types-generics
 next-page: types-union
 ---
-
+<span class="tag tag-inline">Scala 3 only</span>
 
 Used on types, the `&` operator creates a so called _intersection type_.
 The type `A & B` represents values that are **both** of the type `A` and of the type `B` at the same time.
 For instance, the following example uses the intersection type `Resettable & Growable[String]`:
 
+{% tabs intersection-reset-grow %}
+
+{% tab 'Scala 3 Only' %}
+
 ```scala
 trait Resettable:
   def reset(): Unit
@@ -25,6 +29,10 @@ def f(x: Resettable & Growable[String]): Unit =
   x.add("first")
 ```
 
+{% endtab %}
+
+{% endtabs %}
+
 In the method `f` in this example, the parameter `x` is required to be *both* a `Resettable` and a `Growable[String]`.
 
 The _members_ of an intersection type `A & B` are all the members of `A` and all the members of `B`.