def active_navigation_item_container(options = {}, &block)
      options = SimpleNavigation::Helpers.apply_defaults(options)
      SimpleNavigation::Helpers.load_config(options, self, &block)
      SimpleNavigation.active_item_container_for(options[:level])
    end
def active_navigation_item_container(options = {}, &block)
      options = SimpleNavigation::Helpers.apply_defaults(options)
      SimpleNavigation::Helpers.load_config(options, self, &block)
      SimpleNavigation.active_item_container_for(options[:level])
    end
Returns the currently active item container belonging to the specified
 level.

 The following options are supported:
 * <tt>:level</tt> - defaults to :all which returns the
   least specific/shallowest selected item.
   Specify a specific level to only look for the selected item in the
   specified level of navigation
   (e.g. level: 1 for primary_navigation, etc).
 * <tt>:context</tt> - specifies the context for which you would like to
   find the active navigation item. Defaults to :default which loads the
   default navigation.rb (i.e. config/navigation.rb).
   If you specify a context then the plugin tries to load the configuration
   file for that context, e.g. if you call
   <tt>active_navigation_item_name(context: :admin)</tt> the file
   config/admin_navigation.rb will be loaded and used for searching the
   active item.
 * <tt>:items</tt> - you can specify the items directly (e.g. if items are
   dynamically generated from database).
   See SimpleNavigation::ItemsProvider for documentation on what to provide
   as items.

 Returns <tt>nil</tt> if no active item container can be found