What would be the correct way of adding a link to existing path into admin menu? What is the correct way to add a link to a menu? I am using Drupal 7 and admin menu module. I would like to add a link to the content menu item so it would be
Content


  Content
  Add Content
  Comments


I created a custom module and in the menu hook I put:

$items['admin/content/add'] = null;


Then in the menu_alter hook I put:

$items['admin/content/add'] = $items['node/add'];


Now the menu link appears where I want and when I click browser takes me to the admin/content/add but instead of showing the different options for creating node there's a text saying:
You have not created any content types yet. Go to the content type creation page to add a new content type.

If I go to node/add I can see the different options to add different nodes.

So my approach seems to be wrong. What would be the correct way of adding a link to existing path into admin menu?
I think the easiest way to do this would be to create a fully fledged menu item and simply forward it on to the node/add page using drupal_goto() as the page callback:

function MYMODULE_menu() {
  $items['admin/content/add'] = array(
    'title' =&gt; 'Add Content',
    'access arguments' =&gt; array('administer nodes'),
    'page callback' =&gt; 'drupal_goto',
    'page arguments' =&gt; array('node/add'),
    'weight' =&gt; 10 // Use this property to control where in the menu the item will appear.
  );
  return $items;
}