public static Map<String, AttributeValueUpdate> toUpdateItem(final Object entity) {
        return toUpdateItem(entity, NamingPolicy.LOWER_CAMEL_CASE);
    }
public static Map < String , AttributeValueUpdate > toUpdateItem ( final Object entity ) { return toUpdateItem ( entity , NamingPolicy . LOWER_CAMEL_CASE ) ; }
Only the dirty properties will be set to the result Map if the specified entity is a dirty marker entity.

@param entity
@return