title: How to create a delete mutation in GraphQL?
body: <p>StackOverflow!</p>
  
  <p>One day ago I've started to learn a new thing for me - GraphQL.
  Now I know how to add and read objects from a database using GraphQL. I have tried to find an answer to question "how to remove an object from database". But it's no luck. Can you help me with this "hard" (for you) question?</p>
  
  <p>Thanks for your answers!</p>