anchor.diff:  
       /products[{SingleIntegerUriParameter: id='id' default='0'}]/details -> com.example.ShowProductDetailsActionCommand
   
  -If a path segment name is assigned twice:
  +If a path segment name is assigned twice, the action mapper's name is printed in brackets:
   
       /admin -> com.example.GoToAdminAreaActionCommand
       /admin/profile[adminProfile] -> com.example.GoToAdminProfileAreaActionCommand
  
positive.code: 
  If you additionally want to see in the log which concrete action command objects are executed, you have to enable the `DEBUG` log level.
  
  == Writing a Custom Token Extraction Strategy and Query Parameter Extraction Strategy [[custom-strategies]]
negative.code: 
  When this fragment is interpreted by the mapper tree, the original parameter value `some/value/100%` will be added to the `CapturedParameterValues` object.
  
  == Configuring the URI Action Mapper Tree [[configuring-mapper-tree]]
  
  In this section, we will learn how a URI action mapper tree can be further configured. As we have seen in the beginning of this document, a URI action mapper tree can be constructed with a set of builders. Constructing a new action mapper tree is initiated with the static function `create()`:
  
  