arangosh> db.example.last(2);
[ 
  { 
    "_id" : "example/476521525", 
    "_key" : "476521525", 
    "_rev" : "476521525", 
    "Foo" : "bar" 
  }, 
  { 
    "_id" : "example/476193845", 
    "_key" : "476193845", 
    "_rev" : "476193845", 
    "Hello" : "world" 
  } 
]