title: AWS Appsync - unable to find User Pool Client ID
body: <p>Now I'm using AWS AppSync and Cognito. I wrote schema of AppSync. But I can't test the schema in Queries tab. Running query requires user authentication and I can't find User pool client ID.
  Where can I find it?</p>
  
  <p><a href="https://i.stack.imgur.com/BGFJk.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/BGFJk.jpg" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/tOnsH.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/tOnsH.jpg" alt="enter image description here"></a></p>