title: dojo store getIdentity
body: <p>what does store.getIdentity() to exactly:
  Lets say I have the following store, what can I do with getIndetity?</p>
  
  <pre><code>var store = new dojo.store.Memory({
      data: [
          {id: 1, name: "store1_item1", prime: false},
          {id: 2, name: "store1_item2", prime: true},
          {id: 3, name: "store1_item3", prime: true},
          {id: 4, name: "store1_item4", prime: false},
          {id: "xy", name: "store1_item5", prime: true}
      ]
  });
  </code></pre>