public void addMetadata() {
        addMetadata(catId, ColumnMetadata.named("cat_id").withIndex(1).ofType(4).withSize(10).notNull());
        addMetadata(kittenId, ColumnMetadata.named("kitten_id").withIndex(2).ofType(4).withSize(10).notNull());
    }
SKittensSet is a Querydsl query type for SKittensSet
querydsl-jpa/src/test/java/com/querydsl/jpa/domain/sql/SKittensSet.java