code: private static IndexEnvironment setupIndexer(File outputDirectory, int memory,
        boolean storeDocs) throws Exception {
      final IndexEnvironment env = new IndexEnvironment();
      env.setMemory(memory * ONE_MEGABYTE);
      final Specification spec = env.getFileClassSpec("trectext");
      env.addFileClass(spec);
      env.setStoreDocs(storeDocs);
      // if we don't build indices on DOCNO then getting the docIds at query time is
      // extremely slow
      env.setMetadataIndexedFields(new String[]{"docno"}, new String[]{"docno"});
      env.create(outputDirectory.getAbsolutePath(), statusMonitor);
      return env;
    }
docs: because its only reference is in native code, then we will get a crash.