title: How to add method description in Swagger UI in WebAPI Application
body: <p>I am using Swagger as my API tooling framework and it is working out great so far. I just came across this page <a href="https://petstore.swagger.io/" rel="noreferrer">https://petstore.swagger.io/</a></p>
  
  <p>and saw how each method has a description. For example, </p>
  
  <p><code>POST: pet/</code> is described by <code>add a new Pet to the store</code>. I thought adding something like <code>[Description("Description text")]</code> should do it but it just does not. How can I achieve this?</p>