Sometimes I encounter a function public static function create with arguments in plugin classes.

For example, here https://www.sitepoint.com/tutorial-on-using-drupal-8-plugin-derivatives-effectively/ we can see it.

public static function create(ContainerInterface $container, $base_plugin_id) {
    return new static(
      $container->get('entity.manager')->getStorage('node')
    );
  }

Could you clarify me, what is the function for? What should it do and where is it used?

Sometimes I encounter a public static function create() in plugin classes, for the example in the code show in Tutorial on Using Drupal 8 Plugin Derivatives Effectively.

public static function create(ContainerInterface $container, $base_plugin_id) {
  return new static(
    $container->get('entity.manager')->getStorage('node')
  );
}

Could you clarify me what the purpose of that function is, for example what it should do and where it's used?