private static final String HHH_9013_ERROR_MESSAGE_PREFIX = "Non-entity object instance passed to evict";
	/**
	 * Workaround for hibernate bug HHH-9013
	 * See: https://hibernate.atlassian.net/browse/HHH-9013
	 */
	private static void evict_using_workaround_for_hibernate_bug( Session session, Object entity )
		throws IllegalArgumentException
	{
		try {
			session.evict(entity);
		} catch( IllegalArgumentException ex ) {	
			// drop exception if it contains HHH_9013_ERROR_MESSAGE_PREFIX
			final String errorMessage = ex.getMessage() ;
			if( errorMessage != null && errorMessage.startsWith( HHH_9013_ERROR_MESSAGE_PREFIX ) ) {
				// drop it
			}
			else {
				// do not catch it: it is not caused by the bug
				throw ex ;
			}
		}
	}