fixup! add support to traverse JavaType signature

Review: Extend Javadoc to explain that the traversal
happens depth first.

Signed-off-by: Peter Gafert <peter.gafert@archunit.org>

archunit/src/main/java/com/tngtech/archunit/core/domain/JavaType.java

@@ -128,7 +128,9 @@ public Result visitParameterizedType(JavaParameterizedType type) {
      *      Serializable               String
      * </code></pre>
      * For every node visited the respective method of the provided {@code visitor}
-     * will be invoked. At every step it is possible to continue the traversal
+     * will be invoked. The traversal happens depth first, i.e. in this case the {@code visitor}
+     * would be invoked for all types down to {@code Serializable} before visiting the {@code String[]}
+     * array type of the second branch. At every step it is possible to continue the traversal
      * by returning {@link SignatureVisitor.Result#CONTINUE CONTINUE} or stop at that point by
      * returning {@link SignatureVisitor.Result#STOP STOP}.<br><br>
      * Note that the traversal will continue to traverse bounds of type variables,