code: public function getConfigTreeBuilder()
      {
          $builder = new TreeBuilder;
          $node = $builder->root('ds_security');
          $node
              ->children()
                  ->arrayNode('token')
                      ->children()
                          ->booleanNode('uuid')
                              ->defaultFalse()
                          ->end()
                          ->booleanNode('ip')
                              ->defaultFalse()
                          ->end()
                          ->booleanNode('client')
                              ->defaultFalse()
                          ->end()
                          ->booleanNode('modifier')
                              ->defaultFalse()
                          ->end()
                          ->arrayNode('identity')
                              ->children()
                                  ->booleanNode('roles')
                                      ->defaultFalse()
                                  ->end()
                                  ->booleanNode('type')
                                      ->defaultFalse()
                                  ->end()
                                  ->booleanNode('uuid')
                                      ->defaultFalse()
                                  ->end()
                              ->end()
                          ->end()
                      ->end()
                  ->end()
              ->end();
  
          return $builder;
      }
docs: {@inheritdoc}