title: Mongoose - find() with multiple ids that are the same
body: <p>If I were to perform this query with mongoose;</p>
  
  <pre><code>Schema.find({
      _id: {
          $in: ['abcd1234', 'abcd1234', 'abcd1234']
      }
  });
  </code></pre>
  
  <p>The query will only return something like:</p>
  
  <pre><code>[{
      'property1': 'key1',
      'property2': 'key2'
  }]
  </code></pre>
  
  <p>With the array only having one object, obviously because I passed in all the same id's. However, I actually want duplicate objects returned. How can I do this?</p>