code: public <T extends DajlabModelInterface> T get(Class<T> clazz) {
  
  		T ret = null;
  		try {
  			ret = (T) dajlab.get(clazz.getName());
  		} catch (ClassCastException e) {
  			e.printStackTrace();
  		}
  		return ret;
  	}
docs: Get a model from the map using the class.
  
  @param clazz
  a class
  @param <T>
  the class must extend DajlabModelInterface
  @return the model