public void addMetadata() {
        addMetadata(mammalsId, ColumnMetadata.named("mammals_id").withIndex(2).ofType(-5).withSize(19).notNull());
        addMetadata(worldId, ColumnMetadata.named("World_id").withIndex(1).ofType(-5).withSize(19).notNull());
    }
SWorldMammal is a Querydsl query type for SWorldMammal
querydsl-jpa/src/test/java/com/querydsl/jpa/domain/sql/SWorldMammal.java