code: protected void putIntoModel(final Map<String, Object> model, final String key, final Object value) {
          LOGGER.trace("Adding attribute [{}] into the view model for [{}] with value [{}]", key, getClass().getSimpleName(), value);
          model.put(key, value);
      }
docs: Put into model.
  
  @param model the model
  @param key   the key
  @param value the value