title: How to add 'audience' in body for OAuth2 token fetch?
body: <p>I am trying to access an OAuth protected resource and before that I have to fetch a token.
  I am using a feign client and configuring the client details using <strong>ClientCredentialsResourceDetails</strong>.
  Now the documentation says that I can fetch the token by sending these details in the POST request body.</p>
  
  <pre><code>{
      "client_id": "client_id",
      "client_secret": "client_secret",
      "audience": "https://soma-api.com/a/status",
      "grant_type": "client_credentials"
  }
  </code></pre>
  
  <p>and all the fields in the body are required.</p>
  
  <p>Everything seems to be fine but I am unable to find the <strong>audience</strong> configuration option with <strong>ClientCredentialsResourceDetails</strong></p>
  
  <pre><code>final ClientCredentialsResourceDetails details = new ClientCredentialsResourceDetails();
  details.setAccessTokenUri("https://some-server.com/oauth/token");
  details.setClientId("client_id");
  details.setClientSecret("secret_id");
  return details;
  </code></pre>
  
  <p>I have followed <a href="https://github.com/netshoes/sample-feign-oauth2-interceptor" rel="nofollow noreferrer">this</a> tutorial</p>
  
  <p>Here are the links for my <a href="https://github.com/netshoes/sample-feign-oauth2-interceptor/blob/master/src/main/java/com/sample/feign/oauth2/interceptor/OrderFeignClientConfiguration.java" rel="nofollow noreferrer">Config</a> and <a href="https://github.com/netshoes/sample-feign-oauth2-interceptor/blob/master/src/main/java/com/sample/feign/oauth2/interceptor/OrderFeignClient.java" rel="nofollow noreferrer">FeignClient</a></p>
  
  <p>How can I add 'audience' to the body to fetch the token?</p>