@monstrfolk: I didn't understand the issue here. We defined a menu item here....

@monstrfolk: I didn't understand the issue here. We defined a menu item here.
$items['admin/content/claims']
Given a specific page callback for this menu item
'page callback' => 'entity_claim_content', Right?

If I do not pass the page argument, and default value is not pass to the page callback function, That will give me notice of undefined argument.
So, How could this menu item can call node_admin_content as default page argument?