code: func (c *Config) LoadNamespaces(ctx context.Context, qs graph.QuadStore, dest *voc.Namespaces) error {
  	var list []namespace
  	if err := c.LoadTo(ctx, qs, &list); err != nil {
  		return err
  	}
  	register := dest.Register
  	if dest == nil {
  		register = voc.Register
  	}
  	for _, ns := range list {
  		register(voc.Namespace{
  			Prefix: string(ns.Prefix),
  			Full:   string(ns.Full),
  		})
  	}
  	return nil
  }
docs: // LoadNamespaces will load namespaces stored in graph to a specified list.
  // If destination list is empty, global namespace registry will be used.