title: In immudb, can we know if a certain key is available before we do the `Get` query?
body: <p>I have began to do some experiments with immudb. I am inserting some data and it is inserting fine there. However, if I try to get a value like this :</p>
  <p><code>const getRes = await cl.get(getReq);</code></p>
  <p>I get an error &quot;Key not Found&quot;. How can I know if a certain key is available before I do the Get query?</p>