code: func (b *Backend) getGroupMeta(groupUUID string) (*tasks.GroupMeta, error) {
  	groupMeta := &tasks.GroupMeta{}
  	query := bson.M{"_id": groupUUID}
  
  	err := b.groupMetasCollection.FindOne(context.Background(), query).Decode(groupMeta)
  	if err != nil {
  		return nil, err
  	}
  	return groupMeta, nil
  }
docs: // getGroupMeta retrieves group meta data, convenience function to avoid repetition