code: @Override
  	public CommerceNotificationAttachment fetchCommerceNotificationAttachmentByUuidAndGroupId(
  		String uuid, long groupId) {
  		return commerceNotificationAttachmentPersistence.fetchByUUID_G(uuid,
  			groupId);
  	}
docs: Returns the commerce notification attachment matching the UUID and group.
  
  @param uuid the commerce notification attachment's UUID
  @param groupId the primary key of the group
  @return the matching commerce notification attachment, or <code>null</code> if a matching commerce notification attachment could not be found