title: Node S3 is sending me back all objects with similar prefix
body: <p>Whenever I'm getting an object in s3 and there's a similar prefix it sends it back. For example, if the prefix is '712' it sends me back the objects for the prefix '7122' also.
  How do I only get objects with the exact prefix?</p>
  
  <pre><code> var params = {
                  Bucket: "hello",
                  Prefix: '712'
              };
  s3.listObjectsV2(params, function (err, data) {
                  if (err) {
                      console.log(err, err.stack);
                  } else {
                      console.log(data)
                    //logs back all similar
                  }
          })
  </code></pre>