code: def GetPluginObjectByName(cls, plugin_name):
      
      plugin_class = cls._plugin_classes.get(plugin_name, None)
      if plugin_class:
        return plugin_class()
  
      return None
docs: Retrieves a specific plugin object by its name.
  
      Args:
        plugin_name (str): name of the plugin.
  
      Returns:
        BasePlugin: a plugin object or None if not available.