code: public Response process(ResponseBuilder responseBuilder)
  	{
  		Timer.Context timer = calls.time();
  		try
  		{
  			final String entity = process();
  
  			responseBuilder.entity(entity);
  
  			return responseBuilder.build();
  		}
  		catch (Throwable e)
  		{
  			failures.mark();
  
  			throw e;
  		}
  		finally
  		{
  			timer.stop();
  		}
  	}
docs: Render the template as the entity for a ResponseBuilder, returning the built Response
  
  @return the result of calling responseBuilder.