arangosh> keys = [ ];
[ ]
arangosh> for (var i = 0; i < 10; ++i) {
........>   db.example.insert({ _key: "test" + i, value: i });
........>   keys.push("test" + i);
........> }
arangosh> db.example.documents(keys);
{ 
  "documents" : [ 
    { 
      "value" : 0, 
      "_id" : "example/test0", 
      "_rev" : "466799859", 
      "_key" : "test0" 
    }, 
    { 
      "value" : 1, 
      "_id" : "example/test1", 
      "_rev" : "466996467", 
      "_key" : "test1" 
    }, 
    { 
      "value" : 2, 
      "_id" : "example/test2", 
      "_rev" : "467193075", 
      "_key" : "test2" 
    }, 
    { 
      "value" : 3, 
      "_id" : "example/test3", 
      "_rev" : "467389683", 
      "_key" : "test3" 
    }, 
    { 
      "value" : 4, 
      "_id" : "example/test4", 
      "_rev" : "467586291", 
      "_key" : "test4" 
    }, 
    { 
      "value" : 5, 
      "_id" : "example/test5", 
      "_rev" : "467782899", 
      "_key" : "test5" 
    }, 
    { 
      "value" : 6, 
      "_id" : "example/test6", 
      "_rev" : "467979507", 
      "_key" : "test6" 
    }, 
    { 
      "value" : 7, 
      "_id" : "example/test7", 
      "_rev" : "468176115", 
      "_key" : "test7" 
    }, 
    { 
      "value" : 8, 
      "_id" : "example/test8", 
      "_rev" : "468372723", 
      "_key" : "test8" 
    }, 
    { 
      "value" : 9, 
      "_id" : "example/test9", 
      "_rev" : "468569331", 
      "_key" : "test9" 
    } 
  ] 
}