config-servlet/src/main/java/org/ocpsoft/rewrite/servlet/config/Response.java
public static OperationBuilder setContentType(final String contentType)
   {
      return new Response() {
         @Override
         public void performHttp(final HttpServletRewrite event, final EvaluationContext context)
         {
            event.getResponse().setContentType(contentType);
         }

         @Override
         public String toString()
         {
            return "Response.setContentType(\"" + contentType + "\")";
         }
      };
   }
public static OperationBuilder setContentType(final String contentType)
   {
      return new Response() {
         @Override
         public void performHttp(final HttpServletRewrite event, final EvaluationContext context)
         {
            event.getResponse().setContentType(contentType);
         }

         @Override
         public String toString()
         {
            return "Response.setContentType(\"" + contentType + "\")";
         }
      };
   }
Create an {@link Operation} that sets the content type for the {@link HttpServletResponse}