anchor.diff:  	}
   }
   ----
  -====
  -
  -Alternatively, we could use the <<nsa-header-ref,ref>> attribute for XML based configuration:
  -
  -.Headers Writer XML Configuration
  -====
  -[source,xml]
  +
  +.XML
  +[source,xml,role="secondary"]
   ----
   <http>
   	<!-- ... -->
  
positive.code: 		<content-type-options disabled="true"/>
  	</headers>
  </http>
  ----
  ====
  
  
negative.code: 	}
  }
  ----
  
  .XML
  [source,xml,role="secondary"]
  ----
  <http>
  	<!-- ... -->
  