code: protected function getBar($name = 'default')
      {
          // fire event that can be hooked to add items to the nav bar
          $this->events->fire('navigation.bar', [['name' => $name]]);
  
          // check if the name exists in the bar array
          if ($name !== 'default' && !array_key_exists($name, $this->bar)) {
              // use the default name
              $name = 'default';
          }
  
          if (!array_key_exists($name, $this->bar)) {
              // add it if it doesn't exists
              $this->bar[$name] = [];
          }
  
          // don't apply active keys
          $nav = $this->bar[$name];
  
          // fix up and spit out the nav bar
          return $this->process($nav);
      }
docs: Get the bar navigation array.
  
  @param string $name
  
  @return array