title: Swagger annotation to get authorize button
body: <p>I am using swagger to document my java REST API.
  <code>X-Auth-Token</code> should be send in a header of each api (except one).
  I would like to have the button like in the pet store V2 of authorize.
  Can be found here: <a href="http://petstore.swagger.io/" rel="noreferrer">http://petstore.swagger.io/</a></p>
  
  <p>I understood that it is defined in the jason\yaml file that generated is by swagger. 
  To be exact it is done in yaml like this:</p>
  
  <pre><code>securityDefinitions:
    petstore_auth:
      type: "oauth2"
      authorizationUrl: "http://petstore.swagger.io/oauth/dialog"
      flow: "implicit"
      scopes:
        write:pets: "modify pets in your account"
        read:pets: "read your pets"
    api_key:
      type: "apiKey"
      name: "api_key"
      in: "header"
  </code></pre>
  
  <p>All my swagger documentation I did with annotations. But I couldn't find the annotation that does this button.
  Can you help me to find this annotation please?</p>
  
  <p>Thank you! </p>